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Siemens SENTRON 3WL1112-2BB34-4AN2-ZC22

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3WL1112-2BB34-4AN2-ZC22

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The Siemens 3WL1112-2BB34-4AN2-ZC22 is a circuit breaker designed for robust electrical systems. It operates effectively with a rated current of 1,250 Amperes and handles short circuit capacities ranging from 42 to 55 kiloamperes.

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Technical specifications for 3WL1112-2BB34-4AN2-ZC22

ManufacturerSiemens
Product TypeCircuit Breaker
Product LineSENTRON
Part Number3WL1112-2BB34-4AN2-ZC22
Auxiliary Switch Design2 Normally-Open (NO) contacts and 2 Normally-Closed (NC) contacts
Operating Frequency50 to 60 Hertz
Rated Current1,250 Amperes
Power Loss35 Watts at rated current
Short Circuit Breaking Capacity42 to 55 kiloamperes
Protection RatingIP20
Operating MechanismPush button
Ambient Operating Temperature-20 to 70°C (in a non-condensing environment)
Number of Poles3 poles
Electrical Connection TypeBusbar connection
Main Circuit Operating Voltage690 Volts AC
Insulation Voltage1,000 Volts AC
Mounting TypeFixed mount
Storage Temperature-40 to 70°C (in a non-condensing environment)
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Siemens presents the 3WL1112-2BB34-4AN2-ZC22 circuit breaker as part of their SENTRON series. This device is tailored for high-capacity electrical applications, featuring a rated current of 1,250 Amperes. It provides essential protection against short circuits, with breaking capacities ranging between 42 to 55 kiloamperes.

In terms of functionality, the circuit breaker is equipped with an auxiliary switch design that includes two normally-open and two normally-closed contacts. This allows flexibility for integration into various circuit layouts. The main circuit can operate under voltages of up to 690 Volts AC while achieving an insulation voltage capability of 1,000 Volts AC, ensuring reliability in high-voltage scenarios.

For connectivity, the 3WL1112-2BB34-4AN2-ZC22 features a busbar connection type and is built for fixed mounting. Users can expect operational efficiency across a frequency range of 50 to 60 Hertz. The unit's operating mechanism is activated by a push button for straightforward operation. With an ambient temperature tolerance from -20°C to 70°C, it is suitable for diverse operational contexts, provided conditions are non-condensing. In addition, the circuit breaker exhibits a moderate power loss of 35 Watts at its rated current, which is crucial for energy efficiency in large electrical installations. For storage, the device can withstand temperatures as low as -40°C and as high as 70°C, ensuring durability in varied environments.