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Siemens 3RU2126-4DC0 Thermal Overload Relay - 20-25A, Spring Terminals

Siemens 3RU2126-4DC0 Overload Relay, 20-25A, with spring terminals.

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ManufacturerSiemens

Part number3RU2126-4DC0

Current Range 20-25 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 3RU2126-4DC0 is a thermal overload relay designed for motor protection, featuring convenient spring-type terminals for quick and reliable connections. It operates within a 20-25A current range, is a Size S0 device, and offers Class 10 tripping. This model is intended for contactor mounting and supports manual or automatic reset.

This relay is suitable for industrial applications where fast wiring and secure connections are paramount, such as in high-volume manufacturing or assembly lines. The spring terminals simplify installation and maintenance processes.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Siemens 3RU2126-4DC0. We provide quality surplus components at competitive prices, ensuring fast delivery to minimize your operational downtime.

Technical specifications

Current Range	20-25 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

Assembly Lines

Industrial Plants

Compatible systems

Siemens 3RT2 Series Contactors Siemens 3RT1 Series Contactors

Also known as

3RU21264DC0 Siemens S0 overload relay spring terminal 20-25A 3RU2 Series

Replaces / compatible with

This overload relay is designed for mounting on Siemens contactors and can replace other Siemens overload relays with similar current ratings and mounting requirements, especially when spring terminals are desired for faster wiring.

Technical note

Expert tip

For optimal performance with spring terminals, use solid or finely stranded copper conductors that are properly stripped to the recommended length.

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Frequently asked questions

Are spring-type terminals on the 3RU2126-4DC0 more reliable than screw terminals in vibrating environments?

Yes, spring-type terminals generally offer superior reliability in vibrating environments compared to screw terminals. They maintain consistent pressure on the conductor without the risk of loosening due to vibration, ensuring a more secure and stable electrical connection.