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Siemens SENTRON 3WL1212-4CB34-4AN2-ZC22

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3WL1212-4CB34-4AN2-ZC22

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The 3WL1212-4CB34-4AN2-ZC22 from Siemens is a 3-phase circuit breaker designed for robust applications. This unit features a rated current of 1,250 Amperes, making it suitable for high-current scenarios.

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Technical specifications for 3WL1212-4CB34-4AN2-ZC22

ManufacturerSiemens
Product TypeCircuit Breaker
Product LineSENTRON
Part Number3WL1212-4CB34-4AN2-ZC22
Protection RatingIP41
Rated Current1,250 Amperes
Power Loss26.7 Watts at rated current, up to 80 Watts maximum
Rated Phase3-phase
Circuit Breaker SizeSize 2
Mounting TypeFixed mount
Rated Operating Voltage1,000 Volts AC
Number of Poles3 poles
Electrical Endurance15,000 switching cycles (typical)
Main Circuit Operating Voltage690 Volts AC
Auxiliary Switch Design2 Normally-Open (NO) contacts, 2 Normally-Closed (NC) contacts
Insulation Voltage1,000 Volts AC
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Siemens presents the 3WL1212-4CB34-4AN2-ZC22, an advanced circuit breaker within the SENTRON series. This device is configured for 3-phase systems and rated to handle a significant current of 1,250 Amperes. It is engineered to provide a protection rating of IP41, ensuring it is safeguarded against dust and moisture, suitable for many industrial environments.

With an insulation voltage rating identical to the operating voltage at 1,000 Volts AC, this breaker operates effectively under high voltage conditions. The main circuit voltage it can manage is 690 Volts AC. In fixed mount applications, this device occupies a Size 2 format, making it compatible with various mounting setups.

Power dissipation is calculated at 26.7 Watts during rated operation and peaks at 80 Watts. The circuit breaker is constructed for durability, expected to withstand around 15,000 typical switching cycles. For operational versatility, it incorporates an auxiliary switch design featuring 2 Normally-Open (NO) and 2 Normally-Closed (NC) contacts, allowing for flexible integration into control circuits.