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This content was submitted directly to this Web site by the supplier.Article | April 3, 2013
Wago Corporation: Midget-style fuse holders
WAGO Corporation’s 811 Series Class CC and Midget-Style (10x38mm) Fuse Holders provide machine- and panel-builders with a new approach to branch and supplemental protection.
The lever-actuated units replace traditional screw-based terminations with an industry-first application of CAGE CLAMP® Spring Pressure. Beyond maintenance-free, vibration-proof connections, these lift-and-lock terminations reduce wiring times up to 50% — no torque specs or specialty tools.
Up to 1,000 V DC:
Accommodating conductors 14–6 AWG, 811 Series is available in 1–3 poles; an optional coupling kit creates multi-pole configurations in the field. The Class CC Fuse Holder supports branch-circuit applications with up to 200 kA SCCR (30 A, 600 V). The Midget-style variant achieves 100 kA SCCR (30 A, 750 V AC/1,000V DC) for supplemental protection — the 1,000 V DC, 1-pole model is ideal for PV combiner boxes.
The touch-safe 811 Series features a DIN-rail mount clip for easy install or removal. Each Holder carries a test point at each conductor entry for general testing. Circuit identification/marking options are provided by WAGO’s WMB multi-marking strip and exclusive continuous marking strip adapters. 811 Series carries UL, CSA and IEC listings, recognitions and certifications.
Response to Market Trends:
811 Series responds to two recent trends: Adoption of more compact Class CC Fuses over Class J Fuses, and Defined Short Circuit Current Rating (SCCR) requirements. SCCR requirements in NEC Article 409 and UL 508A have spurred demand for fuse-based, branch-circuit protection in control panels. Providing easier integration than traditional circuit breakers, fuses also facilitate higher SCCR ratings. For example, many terminal blocks tested with fuses earn a 100 kA rating; the same terminal block tested with a circuit breaker might only achieve a 65 kA.
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