3WL1232-3CB66-4GA4-ZR21

The Siemens SENTRON 3WL1232-3CB66-4GA4-ZR21 is a 3200A withdrawable air circuit breaker equipped with an ETU25 LSI trip unit, suitable for overcurrent protection of transformers and main lines.

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Siemens SENTRON 3WL1232-3CB66-4GA4-ZR21 3200A withdrawable air circuit breaker product image
Product Positioning

The Siemens SENTRON 3WL1232-3CB66-4GA4-ZR21 is a 3200A withdrawable air circuit breaker, suitable for overcurrent protection applications on the low-voltage side outgoing lines and main lines of transformers.

Core Product Advantages and Features
ETU25 LSI kick unit
Equipped with an ETU25 electronic trip unit, it provides long-delay, short-delay, and instantaneous overcurrent protection functions.
Includes guide rail frame
The last digit of the model number, GA4, indicates that the product comes with a pull-out guide rail frame, which facilitates installation and easy removal for maintenance.
Lockable door optional
The addition of an R21 two-section lockable safety door enhances safety during operation and maintenance.
Transformer protection applications
It is suitable as a low-voltage side outgoing circuit breaker for transformers, and can be used in conjunction with upstream protection to form a complete power distribution system.
project Specification
Rated current In 3200 A
Rated operating voltage Ue 690 V AC, 50/60Hz
Applicable Standards IEC 60947-2
breakout unit ETU25 LSI, adjustable motion value 0.4-1×In
Selecting accessories Z+R21 Lockable door

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