The Siemens WLH1F12CONUL is a Frame Size I WL Low Voltage Air Circuit Breaker (LVACB) rated for 800A and 1200A continuous current at 600V AC. This is the official Siemens catalog number for the WL series with fixed front bus connectors (NEMA bolt connection accessible from the front). Interrupting rating: 85kA. UL 1066 Listed. The WL series is Siemens' flagship low-voltage power circuit breaker for main service entrance, bus tie, and large feeder protection in commercial, industrial, and utility applications. Features drawout or fixed construction, electronic trip unit (ETU), zone-selective interlocking, and communication-ready design. Note: This is the correct catalog number — commonly searched as WLF31200A or WLD31200.
| Specification | Value |
|---|---|
| Amperage | 800A / 1200A |
| Poles | 3 |
| Voltage | 600VAC |
| Interrupt Rating | 85kA @ 600V |
| Frame Size | WL Frame Size I (FSI) |
| Mounting Type | Fixed / Drawout |
| Trip Type | Electronic Trip Unit (ETU) |
| Trip Function | LSIG — Long-Time, Short-Time, Instantaneous, Ground Fault |
| Wire Size | Bus bar connection — NEMA bolt pattern |
| Phase | 3-Phase |
| Standards | UL 1066, CSA C22.2 No. 5 |
| Temperature Rating | 40°C |
Replaces: WLF31200A, WLD31200, WLD31200A
Siemens WL Air Circuit Breaker 800A / 1200A 3-pole circuit breaker. In stock at AllBreakerSales.com. Call (877) 611-0034 for same-day pricing. Genuine OEM parts, ships from US warehouse.
Brand: Siemens | Series: WL Air Circuit Breaker | Catalog Number: WLH1F12CONUL
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