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Siemens 3RU2126-4PC0 Thermal Overload Relay - 30-36A

Siemens 3RU2126-4PC0 thermal overload relay for motor protection.

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ManufacturerSiemens

Part number3RU2126-4PC0

Current Setting 30-36 A

Size S0

Class 10

Reset Manual/Automatic

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Thermal overload protection Motor protection Size S0 Class 10 Spring-type terminals Manual/Automatic reset

Product description

The Siemens 3RU2126-4PC0 is a heavy-duty thermal overload relay designed for robust motor protection. It features a wide current setting range of 30 to 36 Amps and is built for Size S0 applications, operating with Class 10 protection. This relay is designed for contactor mounting and incorporates spring-type terminals for both main and auxiliary circuits, simplifying wiring and ensuring secure connections. It supports manual or automatic reset functionality.

This overload relay is essential for protecting larger motors used in demanding industrial environments such as heavy machinery, large pumps, industrial fans, and material handling systems. Its spring terminals offer quick and reliable connections, reducing installation time and maintenance efforts.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, provides the Siemens 3RU2126-4PC0. We focus on delivering quality surplus components to support your industrial automation needs, ensuring operational continuity and cost savings.

Technical specifications

Current Setting	30-36 A
Size	S0
Class	10
Reset	Manual/Automatic
Main Circuit Terminals	Spring-type
Auxiliary Circuit Terminals	Spring-type
Mounting	Contactor Mounting

Common applications

Large industrial motors

Heavy machinery

Industrial pumps

Large fans

Material handling systems

Motor control centers

Compatible systems

Compatible with Siemens Size S0 contactors

Also known as

Siemens 3RU2126-4PC0 SIRIUS 3RU21 Overload Relay Siemens Spring Terminal Relay

Replaces / compatible with

This overload relay is designed for mounting with compatible Siemens Size S0 contactors and utilizes spring-type terminals for efficient wiring. It can serve as a replacement for previous Siemens overload relays with similar specifications and terminal types.

Technical note

Expert tip

Spring-type terminals require a specific insertion technique for secure connection; ensure wires are properly stripped and inserted firmly into the terminal slots.

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Frequently asked questions

What are the advantages of using spring-type terminals on the Siemens 3RU2126-4PC0 overload relay?

The spring-type terminals on the Siemens 3RU2126-4PC0 offer significant advantages, including faster installation compared to screw terminals and a more secure connection that is less prone to loosening due to vibration. This is particularly beneficial in harsh industrial environments.