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Siemens 3WL1212-4CB34-4AN2-Z Fixed-Mounted Air Circuit Breaker

Siemens 3WL1212-4CB34-4AN2-Z Fixed-Mounted 3-Pole Air Circuit Breaker

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ManufacturerSiemens

Part number3WL1212-4CB34-4AN2-Z

Poles 3

Size II

Voltage 690V AC

Current 1250A

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Veteran-owned

CAGE: 9NK75

Fixed-mounted design 3-pole configuration 1250A continuous current 100kA breaking capacity 690V AC operational voltage Front terminal connection

Product description

The Siemens 3WL1212-4CB34-4AN2-Z is a 3-pole, fixed-mounted air circuit breaker from the SENTRON 3WL series. It features an IEC In rating of 1250A at up to 690V AC (50/60Hz) and a breaking capacity (Icu) of 100kA at 500V. This breaker is designed for front connections, with dual-hole terminals at the top and bottom.

This circuit breaker is suitable for a wide range of industrial applications requiring robust protection for electrical installations, systems, and motors. Industries such as manufacturing, power generation, and heavy industry commonly utilize these types of breakers for their reliable performance and high breaking capacity.

Source your Siemens 3WL1212-4CB34-4AN2-Z from Stanlo Automation, a veteran-owned surplus parts distributor. We offer competitive pricing and fast shipping to keep your operations running smoothly. Our experienced team can assist with any inquiries to ensure you find the right components for your needs.

Technical specifications

Poles	3
Size	II
Voltage	690V AC
Current	1250A
Breaking Capacity	100kA at 500V
Mounting	Fixed-mounted
Connection	Front, top/bottom dual-hole

Common applications

Industrial power distribution

Motor protection

System protection

Electrical installations

Manufacturing facilities

Power generation

Compatible systems

Industrial control panels Power distribution units Switchgear assemblies

Also known as

Siemens SENTRON 3WL1212-4CB34-4AN2-Z 3WL12124CB344AN2Z Siemens 1250A Circuit Breaker

Replaces / compatible with

This circuit breaker is part of the Siemens SENTRON 3WL series and is designed as a direct replacement for other units within this series with identical specifications. Always confirm compatibility before replacement.

Technical note

Expert tip

Ensure proper torque is applied to the dual-hole front terminals to maintain a secure connection and prevent overheating.

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Frequently asked questions

What are the main specifications of the Siemens 3WL1212-4CB34-4AN2-Z circuit breaker?

The Siemens 3WL1212-4CB34-4AN2-Z is a 3-pole, fixed-mounted air circuit breaker with a current rating of 1250A and a breaking capacity of 100kA at 500V. It operates at up to 690V AC and features front connections with dual-hole terminals.