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Siemens 3RU2126-4BC0 Thermal Overload Relay - 14-20A, Spring Terminals

Siemens 3RU2126-4BC0 Overload Relay, 14-20A, with spring terminals.

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ManufacturerSiemens

Part number3RU2126-4BC0

Current Range 14-20 A

Size S0

Class 10

Reset Manual/Automatic

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Thermal overload protection Class 10 tripping Manual or automatic reset Contactor mounting Spring-type terminals

Product description

The Siemens 3RU2126-4BC0 is a thermal overload relay engineered for motor protection, featuring spring-type terminals for efficient and secure connections. It operates within a 14-20A current range, is a Size S0 device, and offers Class 10 tripping. This model is designed for contactor mounting and includes manual/automatic reset functionality.

Ideal for applications where quick and reliable connections are crucial, this overload relay is used in automation systems, motor control centers, and machine building. The spring terminals facilitate easier and faster wiring, reducing installation time.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, provides the Siemens 3RU2126-4BC0. We ensure quality surplus components are readily available, offering fast shipping to minimize your production downtime.

Technical specifications

Current Range	14-20 A
Size	S0
Class	10
Reset	Manual/Automatic
Main Circuit Terminals	Spring-type
Auxiliary Circuit Terminals	Spring-type
Mounting	Contactor

Common applications

Motor Control

Automation Systems

Control Panels

Machine Building

Industrial Plants

Assembly Lines

Compatible systems

Siemens 3RT2 Series Contactors Siemens 3RT1 Series Contactors

Also known as

3RU21264BC0 Siemens S0 overload relay spring terminal 3RU2 Series

Replaces / compatible with

This overload relay is compatible with Siemens contactors and can replace other Siemens overload relays with similar current ratings and mounting requirements, especially where spring terminals are preferred for faster wiring.

Technical note

Expert tip

When using spring terminals, ensure the conductor is stripped to the correct length and inserted fully for optimal contact and safety.

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Frequently asked questions

Why choose spring-type terminals on the Siemens 3RU2126-4BC0 overload relay?

Spring-type terminals offer faster and more reliable connections compared to screw terminals, particularly in environments with vibration. They eliminate the need for torque control and ensure a secure connection, reducing installation time and maintenance needs.