{"id":2668,"date":"2026-09-20T09:20:22","date_gmt":"2026-09-20T01:20:22","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&p=2668"},"modified":"2026-09-28T17:22:50","modified_gmt":"2026-09-28T09:22:50","slug":"100ka-spd-quality-inspection-before-project-delivery","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/id\/blog\/100ka-spd-quality-inspection-before-project-delivery\/","title":{"rendered":"100KA SPD Quality Inspection Before Project Delivery"},"content":{"rendered":"

A 100kA SPD is one of the highest-capacity surge protective devices used in industrial, commercial, and utility power systems. Before it ships to your project, a disciplined 100kA surge protective device<\/a> must pass a structured quality inspection. A single undetected defect can disable an entire distribution board after the first lightning season, so the pre-delivery check is where project risk is either controlled or quietly imported.<\/p>\r\n

Britec Electric has manufactured surge protective devices since 2003, with products tested to IEC\/EN 61643-11 and certified by T\u00dcV, CE, and Intertek SEMKO. The checklist below reflects the same factory routine we apply to every 100kA-class unit before it leaves our workshop.<\/p>\r\n\r\n

What a 100kA SPD Rating Really Means<\/h2>\r\n

Two numbers sit behind the \"100kA\" label, and both matter for inspection. The nominal discharge current Di dalam<\/strong> (8\/20 \u00b5s) is the current the SPD can withstand repeatedly, while the maximum discharge current maksimal<\/strong> is the peak it can absorb once without failure. A 100kA-class SPD typically shows In around 50kA and Imax around 100\u2013110kA, or In 100kA on high-current designs such as the BR-200 series.<\/p>\r\n

The protection class also drives the test method. Type 1 and Type 1+2 units are verified with the 10\/350 \u00b5s lightning impulse current Iimp, while Type 2 units are verified with 8\/20 \u00b5s current. Understanding these differences is essential before you judge a test report. Read our guide on surge protective device types and functions<\/a> for the full breakdown.<\/p>\r\n\r\n

Why Pre-Delivery Inspection Protects Your Project<\/h2>\r\n

For B2B buyers, panel builders, and EPC contractors, inspection is not paperwork, it is risk control. A 100kA SPD usually sits at the most exposed point of the power system, so a field failure is expensive and hard to schedule. The main reasons to inspect before delivery are below.<\/p>\r\n

\u25cf Confirm the delivered unit matches the approved specification and order code.<\/p>\r\n

\u25cf Catch manufacturing or transport damage before it reaches the site.<\/p>\r\n

\u25cf Validate that test data supports the claimed In, Imax, and Up values.<\/p>\r\n

\u25cf Ensure certificates and documentation satisfy local compliance and tender requirements.<\/p>\r\n

\u25cf Reduce warranty disputes by agreeing on acceptance criteria up front.<\/p>\r\n\r\n

The 100kA SPD Quality Inspection Checklist<\/h2>\r\n

Before signing the delivery note, verify each of the points below. This is the core routine we recommend for every 100kA-class shipment.<\/p>\r\n

\u25cf Visual inspection: housing intact, DIN-rail clip seated, terminals torqued, no cracks or moisture.<\/p>\r\n

\u25cf Rating label: Uc, In, Imax, Up, Type, pole count, and order code match the purchase order.<\/p>\r\n

\u25cf Nominal and max discharge current verified against the IEC\/EN 61643-11 type-test report.<\/p>\r\n

\u25cf Voltage protection level Up measured and within the datasheet limit for the rated Uc.<\/p>\r\n

\u25cf TOV withstand UT confirmed for the installed voltage system (e.g., 385V or 440V class).<\/p>\r\n

\u25cf Thermal disconnector and fault-indication window (green to red) function checked.<\/p>\r\n

\u25cf Response time tA within specification, typically \u226425 ns for varistor-based designs.<\/p>\r\n

\u25cf Enclosure material and IP degree confirmed (UL94-V0 thermoplastic, IP20 typical).<\/p>\r\n

\u25cf Remote signaling contact tested open and closed where specified.<\/p>\r\n

\u25cf Grounding terminal and conductor cross-section within the 4\u201335 mm\u00b2 range.<\/p>\r\n

\u25cf Packing list, Certificate of Conformity, and batch test record included per shipment.<\/p>\r\n\"BR-25GR<\/a>\r\n

BR-25GR 4P Type 1 surge arrester, Imax 100kA (white-background product photo).<\/p>\r\n\r\n

Factory Acceptance Test Steps for 100kA SPD<\/h2>\r\n

A factory acceptance test (FAT) goes beyond visual checks and proves the unit behaves under surge stress. For high-current SPDs we apply the following sequence.<\/p>\r\n

\u25cf Sample selection by production batch and serial-number traceability.<\/p>\r\n

\u25cf 8\/20 \u00b5s impulse current test at In and at Imax to confirm clamping and survival.<\/p>\r\n

\u25cf Insulation resistance and power-frequency withstand voltage test on terminals.<\/p>\r\n

\u25cf Thermal runaway simulation to verify the disconnector opens safely.<\/p>\r\n

\u25cf End-of-life disconnect verification so the SPD fails safe, not short.<\/p>\r\n

\u25cf Remote signaling and indicator check matched to the customer wiring diagram.<\/p>\r\n

For site-level guidance on how these units are then wired and verified, see our AC power SPD installation and commissioning guide<\/a>.<\/p>\r\n\"BR-110<\/a>\r\n

BR-110 4P Type 2 surge protective device, Imax 110kA (white-background product photo).<\/p>\r\n\r\n

Certificates and Documentation to Request<\/h2>\r\n

A 100kA SPD delivered without proper documents is hard to commission and harder to defend in an audit. Ask for the following with every shipment.<\/p>\r\n

\u25cf IEC\/EN 61643-11 type-test report covering In, Imax, Up, and TOV.<\/p>\r\n

\u25cf T\u00dcV, CE, and Intertek SEMKO certificates for the exact model.<\/p>\r\n

\u25cf Factory Certificate of Conformity and batch production record.<\/p>\r\n

\u25cf Dimension drawing, wiring diagram, and remote-signal contact rating.<\/p>\r\n

Browse the full AC power surge protection product range<\/a> for datasheets and certificates per model.<\/p>\r\n\r\n

How Britec Controls 100kA SPD Quality<\/h2>\r\n

With more than two decades of SPD manufacturing, our process targets the failure modes that matter. Metal-oxide varistor blocks are selected and matched for consistent clamping, a built-in thermal disconnector forces a safe failure, and every high-current series passes impulse and thermal-runaway testing before packing. Production lines support both standard and OEM\/ODM volumes, so inspection criteria stay consistent from prototype to bulk order.<\/p>\r\n\r\n

\r\n

Need a 100kA SPD Inspection Plan for Your Project?<\/h3>\r\n

Britec supplies type-test reports, T\u00dcV\/CE certificates, and FAT documentation with every 100kA-class shipment. Share your specification and our engineering team will confirm acceptance criteria before delivery.<\/p>\r\n

Contact Britec for a Quote<\/a><\/p>\r\n\r\n<\/div>\r\n

100kA SPD Inspection Quick Reference<\/h2>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Checkpoint<\/th>\r\nPass Criteria<\/th>\r\n<\/tr>\r\n
In \/ Imax<\/td>\r\nMatches order and IEC\/EN 61643-11 type-test report<\/td>\r\n<\/tr>\r\n
Up (protection level)<\/td>\r\nWithin datasheet limit for rated Uc<\/td>\r\n<\/tr>\r\n
TOV withstand<\/td>\r\nConfirmed for installed voltage class<\/td>\r\n<\/tr>\r\n
Thermal disconnector<\/td>\r\nOpens safely, window turns red<\/td>\r\n<\/tr>\r\n
Sertifikat<\/td>\r\nT\u00dcV \/ CE \/ SEMKO + CoC included<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n

Pertanyaan yang Sering Diajukan<\/h2>\r\n

Q1. What does \"100kA\" mean on an SPD?<\/h3>\r\n

A: It usually refers to the maximum discharge current Imax (8\/20 \u00b5s) the SPD can absorb once without damage, or the nominal In on high-current designs. Always read both In and Imax on the label.<\/p>\r\n\r\n

Q2. Which standard applies to 100kA SPD inspection?<\/h3>\r\n

A: Low-voltage SPDs are inspected against IEC 61643-11 and the European version EN 61643-11, which define In, Imax, Up, TOV, and disconnector requirements.<\/p>\r\n\r\n

Q3. What parameters must be verified before delivery?<\/h3>\r\n

A: Uc, In, Imax, Up, Type\/class, TOV withstand, thermal disconnector function, response time, IP degree, and the matching order code.<\/p>\r\n\r\n

Q4. What is a factory acceptance test for an SPD?<\/h3>\r\n

A: A FAT is a batch-based set of impulse, insulation, thermal-runaway, and end-of-life tests that prove the unit behaves correctly under surge stress before shipping.<\/p>\r\n\r\n

Q5. How do you verify the thermal disconnector?<\/h3>\r\n

A: By simulating thermal runaway and confirming the internal disconnector opens the faulty module from the network while the indicator window changes from green to red.<\/p>\r\n\r\n

Q6. Why check TOV withstand on a 100kA SPD?<\/h3>\r\n

A: Temporary overvoltage from faults can destroy an SPD even without lightning. The TOV withstand UT must match the system voltage class used on site.<\/p>\r\n\r\n

Q7. What certificates should a 100kA SPD have?<\/h3>\r\n

A: An IEC\/EN 61643-11 type-test report plus T\u00dcV, CE, and Intertek SEMKO certificates for the exact model, supported by a factory Certificate of Conformity.<\/p>\r\n\r\n

Q8. How is the nominal discharge current confirmed?<\/h3>\r\n

A: Through the 8\/20 \u00b5s impulse test repeated at In in the type-test report, cross-checked against the production batch sample during FAT.<\/p>\r\n\r\n

Q9. What common defects appear in pre-delivery inspection?<\/h3>\r\n

A: Label and order-code mismatch, cracked housings from transport, loose terminals, failed indicator windows, and missing or inconsistent test documentation.<\/p>\r\n\r\n

Q10. How does Britec ensure 100kA SPD quality before shipping?<\/h3>\r\n

A: Matched varistor selection, built-in thermal disconnectors, full impulse and thermal-runaway testing, and traceable batch records support every shipment since 2003.<\/p>\r\n\r\n

\r\n

Ready to Specify Your 100kA SPD?<\/h3>\r\n

Send us your voltage system, pole count, and required In\/Imax. We will return a matched model with full test reports and certificates, inspected before project delivery.<\/p>\r\n

Talk to Britec Engineering<\/a><\/p>\r\n\r\n<\/div>\r\n

Related Resources<\/h2>\r\n

\u25cf What Happens When 100kA Surge Protector Absorbs a Surge Beyond Its Rating?<\/a><\/p>\r\n

\u25cf How Lightning Surge Protectors Protect Electrical Equipment<\/a><\/p>\r\n

\u25cf What Is a Surge Protective Device? Function, Types<\/a><\/p>\r\n

\u25cf AC Power Surge Protection Device Installation & Commissioning<\/a><\/p>\r\n

\u25cf What Is a Type 2 Surge Protection Device<\/a><\/p>","protected":false},"featured_media":2650,"parent":0,"menu_order":12,"template":"","meta":{"_acf_changed":false},"blog_category":[9],"class_list":["post-2668","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-industry-news"],"acf":{"des":"A practical 100kA SPD quality inspection checklist for B2B buyers: pre-delivery tests, factory acceptance steps, and certificates per IEC\/EN 61643-11.","txt":"

A 100kA SPD is one of the highest-capacity surge protective devices used in industrial, commercial, and utility power systems. Before it ships to your project, a disciplined 100kA surge protective device<\/a> must pass a structured quality inspection. A single undetected defect can disable an entire distribution board after the first lightning season, so the pre-delivery check is where project risk is either controlled or quietly imported.<\/p>\r\n

Britec Electric has manufactured surge protective devices since 2003, with products tested to IEC\/EN 61643-11 and certified by T\u00dcV, CE, and Intertek SEMKO. The checklist below reflects the same factory routine we apply to every 100kA-class unit before it leaves our workshop.<\/p>\r\n\r\n

What a 100kA SPD Rating Really Means<\/h2>\r\n

Two numbers sit behind the \"100kA\" label, and both matter for inspection. The nominal discharge current In<\/strong> (8\/20 \u00b5s) is the current the SPD can withstand repeatedly, while the maximum discharge current Imax<\/strong> is the peak it can absorb once without failure. A 100kA-class SPD typically shows In around 50kA and Imax around 100\u2013110kA, or In 100kA on high-current designs such as the BR-200 series.<\/p>\r\n

The protection class also drives the test method. Type 1 and Type 1+2 units are verified with the 10\/350 \u00b5s lightning impulse current Iimp, while Type 2 units are verified with 8\/20 \u00b5s current. Understanding these differences is essential before you judge a test report. Read our guide on surge protective device types and functions<\/a> for the full breakdown.<\/p>\r\n\r\n

Why Pre-Delivery Inspection Protects Your Project<\/h2>\r\n

For B2B buyers, panel builders, and EPC contractors, inspection is not paperwork, it is risk control. A 100kA SPD usually sits at the most exposed point of the power system, so a field failure is expensive and hard to schedule. The main reasons to inspect before delivery are below.<\/p>\r\n

\u25cf Confirm the delivered unit matches the approved specification and order code.<\/p>\r\n

\u25cf Catch manufacturing or transport damage before it reaches the site.<\/p>\r\n

\u25cf Validate that test data supports the claimed In, Imax, and Up values.<\/p>\r\n

\u25cf Ensure certificates and documentation satisfy local compliance and tender requirements.<\/p>\r\n

\u25cf Reduce warranty disputes by agreeing on acceptance criteria up front.<\/p>\r\n\r\n

The 100kA SPD Quality Inspection Checklist<\/h2>\r\n

Before signing the delivery note, verify each of the points below. This is the core routine we recommend for every 100kA-class shipment.<\/p>\r\n

\u25cf Visual inspection: housing intact, DIN-rail clip seated, terminals torqued, no cracks or moisture.<\/p>\r\n

\u25cf Rating label: Uc, In, Imax, Up, Type, pole count, and order code match the purchase order.<\/p>\r\n

\u25cf Nominal and max discharge current verified against the IEC\/EN 61643-11 type-test report.<\/p>\r\n

\u25cf Voltage protection level Up measured and within the datasheet limit for the rated Uc.<\/p>\r\n

\u25cf TOV withstand UT confirmed for the installed voltage system (e.g., 385V or 440V class).<\/p>\r\n

\u25cf Thermal disconnector and fault-indication window (green to red) function checked.<\/p>\r\n

\u25cf Response time tA within specification, typically \u226425 ns for varistor-based designs.<\/p>\r\n

\u25cf Enclosure material and IP degree confirmed (UL94-V0 thermoplastic, IP20 typical).<\/p>\r\n

\u25cf Remote signaling contact tested open and closed where specified.<\/p>\r\n

\u25cf Grounding terminal and conductor cross-section within the 4\u201335 mm\u00b2 range.<\/p>\r\n

\u25cf Packing list, Certificate of Conformity, and batch test record included per shipment.<\/p>\r\n\"BR-25GR<\/a>\r\n

BR-25GR 4P Type 1 surge arrester, Imax 100kA (white-background product photo).<\/p>\r\n\r\n

Factory Acceptance Test Steps for 100kA SPD<\/h2>\r\n

A factory acceptance test (FAT) goes beyond visual checks and proves the unit behaves under surge stress. For high-current SPDs we apply the following sequence.<\/p>\r\n

\u25cf Sample selection by production batch and serial-number traceability.<\/p>\r\n

\u25cf 8\/20 \u00b5s impulse current test at In and at Imax to confirm clamping and survival.<\/p>\r\n

\u25cf Insulation resistance and power-frequency withstand voltage test on terminals.<\/p>\r\n

\u25cf Thermal runaway simulation to verify the disconnector opens safely.<\/p>\r\n

\u25cf End-of-life disconnect verification so the SPD fails safe, not short.<\/p>\r\n

\u25cf Remote signaling and indicator check matched to the customer wiring diagram.<\/p>\r\n

For site-level guidance on how these units are then wired and verified, see our AC power SPD installation and commissioning guide<\/a>.<\/p>\r\n\"BR-110<\/a>\r\n

BR-110 4P Type 2 surge protective device, Imax 110kA (white-background product photo).<\/p>\r\n\r\n

Certificates and Documentation to Request<\/h2>\r\n

A 100kA SPD delivered without proper documents is hard to commission and harder to defend in an audit. Ask for the following with every shipment.<\/p>\r\n

\u25cf IEC\/EN 61643-11 type-test report covering In, Imax, Up, and TOV.<\/p>\r\n

\u25cf T\u00dcV, CE, and Intertek SEMKO certificates for the exact model.<\/p>\r\n

\u25cf Factory Certificate of Conformity and batch production record.<\/p>\r\n

\u25cf Dimension drawing, wiring diagram, and remote-signal contact rating.<\/p>\r\n

Browse the full AC power surge protection product range<\/a> for datasheets and certificates per model.<\/p>\r\n\r\n

How Britec Controls 100kA SPD Quality<\/h2>\r\n

With more than two decades of SPD manufacturing, our process targets the failure modes that matter. Metal-oxide varistor blocks are selected and matched for consistent clamping, a built-in thermal disconnector forces a safe failure, and every high-current series passes impulse and thermal-runaway testing before packing. Production lines support both standard and OEM\/ODM volumes, so inspection criteria stay consistent from prototype to bulk order.<\/p>\r\n\r\n

\r\n

Need a 100kA SPD Inspection Plan for Your Project?<\/h3>\r\n

Britec supplies type-test reports, T\u00dcV\/CE certificates, and FAT documentation with every 100kA-class shipment. Share your specification and our engineering team will confirm acceptance criteria before delivery.<\/p>\r\n

Contact Britec for a Quote<\/a><\/p>\r\n\r\n<\/div>\r\n

100kA SPD Inspection Quick Reference<\/h2>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Checkpoint<\/th>\r\nPass Criteria<\/th>\r\n<\/tr>\r\n
In \/ Imax<\/td>\r\nMatches order and IEC\/EN 61643-11 type-test report<\/td>\r\n<\/tr>\r\n
Up (protection level)<\/td>\r\nWithin datasheet limit for rated Uc<\/td>\r\n<\/tr>\r\n
TOV withstand<\/td>\r\nConfirmed for installed voltage class<\/td>\r\n<\/tr>\r\n
Thermal disconnector<\/td>\r\nOpens safely, window turns red<\/td>\r\n<\/tr>\r\n
Certificates<\/td>\r\nT\u00dcV \/ CE \/ SEMKO + CoC included<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n

Frequently Asked Questions<\/h2>\r\n

Q1. What does \"100kA\" mean on an SPD?<\/h3>\r\n

A: It usually refers to the maximum discharge current Imax (8\/20 \u00b5s) the SPD can absorb once without damage, or the nominal In on high-current designs. Always read both In and Imax on the label.<\/p>\r\n\r\n

Q2. Which standard applies to 100kA SPD inspection?<\/h3>\r\n

A: Low-voltage SPDs are inspected against IEC 61643-11 and the European version EN 61643-11, which define In, Imax, Up, TOV, and disconnector requirements.<\/p>\r\n\r\n

Q3. What parameters must be verified before delivery?<\/h3>\r\n

A: Uc, In, Imax, Up, Type\/class, TOV withstand, thermal disconnector function, response time, IP degree, and the matching order code.<\/p>\r\n\r\n

Q4. What is a factory acceptance test for an SPD?<\/h3>\r\n

A: A FAT is a batch-based set of impulse, insulation, thermal-runaway, and end-of-life tests that prove the unit behaves correctly under surge stress before shipping.<\/p>\r\n\r\n

Q5. How do you verify the thermal disconnector?<\/h3>\r\n

A: By simulating thermal runaway and confirming the internal disconnector opens the faulty module from the network while the indicator window changes from green to red.<\/p>\r\n\r\n

Q6. Why check TOV withstand on a 100kA SPD?<\/h3>\r\n

A: Temporary overvoltage from faults can destroy an SPD even without lightning. The TOV withstand UT must match the system voltage class used on site.<\/p>\r\n\r\n

Q7. What certificates should a 100kA SPD have?<\/h3>\r\n

A: An IEC\/EN 61643-11 type-test report plus T\u00dcV, CE, and Intertek SEMKO certificates for the exact model, supported by a factory Certificate of Conformity.<\/p>\r\n\r\n

Q8. How is the nominal discharge current confirmed?<\/h3>\r\n

A: Through the 8\/20 \u00b5s impulse test repeated at In in the type-test report, cross-checked against the production batch sample during FAT.<\/p>\r\n\r\n

Q9. What common defects appear in pre-delivery inspection?<\/h3>\r\n

A: Label and order-code mismatch, cracked housings from transport, loose terminals, failed indicator windows, and missing or inconsistent test documentation.<\/p>\r\n\r\n

Q10. How does Britec ensure 100kA SPD quality before shipping?<\/h3>\r\n

A: Matched varistor selection, built-in thermal disconnectors, full impulse and thermal-runaway testing, and traceable batch records support every shipment since 2003.<\/p>\r\n\r\n

\r\n

Ready to Specify Your 100kA SPD?<\/h3>\r\n

Send us your voltage system, pole count, and required In\/Imax. We will return a matched model with full test reports and certificates, inspected before project delivery.<\/p>\r\n

Talk to Britec Engineering<\/a><\/p>\r\n\r\n<\/div>\r\n

Related Resources<\/h2>\r\n

\u25cf What Happens When 100kA Surge Protector Absorbs a Surge Beyond Its Rating?<\/a><\/p>\r\n

\u25cf How Lightning Surge Protectors Protect Electrical Equipment<\/a><\/p>\r\n

\u25cf What Is a Surge Protective Device? Function, Types<\/a><\/p>\r\n

\u25cf AC Power Surge Protection Device Installation & Commissioning<\/a><\/p>\r\n

\u25cf What Is a Type 2 Surge Protection Device<\/a><\/p>"},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/id\/wp-json\/wp\/v2\/blog\/2668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/id\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/id\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/id\/wp-json\/wp\/v2\/media\/2650"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/id\/wp-json\/wp\/v2\/media?parent=2668"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/id\/wp-json\/wp\/v2\/blog_category?post=2668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}