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Siemens 3WL9312-5AA00-0AA2 Electronic Trip Unit ETU25B

Siemens 3WL9312-5AA00-0AA2 ETU25B Electronic Trip Unit for 3WL circuit breakers.

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ManufacturerSiemens

Part number3WL9312-5AA00-0AA2

Type ETU25B

Release 2

Protection LSI adjustable

Rating Plug Without

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Adjustable LSI protection ETU release 2 For 3WL circuit breakers Without rating plug

Product description

The Siemens 3WL9312-5AA00-0AA2 is an Electronic Trip Unit (ETU) specifically designed for the 3WL series circuit breakers. This model, the ETU25B, features release 2 with adjustable LSI (Long-time, Short-time, Instantaneous) protection. It is supplied without a rating plug, allowing for customized settings to suit various electrical protection needs.

This trip unit is crucial for ensuring the safety and reliability of electrical distribution systems. Its adjustable protection settings make it suitable for a wide range of industrial and commercial applications where precise overcurrent and short-circuit protection is required, such as in manufacturing plants, data centers, and power distribution panels.

As a veteran-owned surplus parts distributor, Stanlo Automation provides reliable access to essential components like the Siemens 3WL9312-5AA00-0AA2. We understand the critical nature of industrial automation parts and are dedicated to offering quality surplus equipment to keep your operations running smoothly and efficiently.

Technical specifications

Type	ETU25B
Release	2
Protection	LSI adjustable
Rating Plug	Without

Common applications

Industrial Power Distribution

Manufacturing Facilities

Electrical Switchgear

Motor Protection

Compatible systems

Siemens 3WL Circuit Breakers

Also known as

Siemens ETU25B Trip Unit 3WL Circuit Breaker ETU Siemens 3WL Accessories

Replaces / compatible with

This trip unit is a component for Siemens 3WL circuit breakers. Specific replacement compatibility depends on the original circuit breaker configuration.

Technical note

Expert tip

Ensure proper calibration and setting of the LSI parameters based on the protected circuit's load characteristics to prevent nuisance tripping or inadequate protection.

What happens next?

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Frequently asked questions

What type of protection does the Siemens 3WL9312-5AA00-0AA2 ETU25B offer?

The Siemens 3WL9312-5AA00-0AA2 ETU25B offers adjustable LSI (Long-time, Short-time, Instantaneous) protection. This allows for precise customization of the circuit breaker's response to different types of overcurrent and short-circuit faults.