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Siemens 3RB3036-2UB0 SIRIUS Electronic Overload Relay

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ManufacturerSiemens

Part number3RB3036-2UB0

Current Range 12.5-50 A

Trip Class 20E

Size S2

Mounting Contactor Mounting

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CAGE: 9NK75

Electronic Overload Protection Adjustable Current Setting Manual/Automatic Reset Direct Contactor Mounting Class 20E Tripping Internal Power Supply

Product description

The Siemens 3RB3036-2UB0 is a versatile electronic overload relay designed for reliable motor protection. It features an adjustable current range of 12.5 to 50 A and a Class 20E tripping characteristic, providing effective protection for a variety of motor loads. This relay is designed for direct mounting onto Siemens 3RT2 Size S2 contactors, using screw terminals for both main and auxiliary circuits.

This overload relay is ideal for applications in manufacturing, industrial automation, and process control, offering protection against overload, phase imbalance, and phase failure. Its internal power supply simplifies installation by eliminating the need for an external power source.

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Technical specifications

Current Range	12.5-50 A
Trip Class	20E
Size	S2
Mounting	Contactor Mounting
Main Circuit Terminals	Screw
Auxiliary Circuit Terminals	Screw
Reset	Manual/Automatic
Poles	3
Voltage Rating	690V AC

Common applications

Manufacturing

Industrial Automation

Process Control

Motor Control

General Industry

Compatible systems

Siemens 3RT2035 Siemens 3RT2036 Siemens 3RT2037 Siemens 3RT2038

Also known as

Siemens SIRIUS Overload Relay 3RB3036-2UB0

Replaces / compatible with

Compatible with Siemens 3RT2 Size S2 contactors.

Technical note

Expert tip

This electronic overload relay has an internal power supply, simplifying installation by eliminating external power requirements.

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Frequently asked questions

What is the current range and trip class of the Siemens 3RB3036-2UB0 overload relay?

The Siemens 3RB3036-2UB0 overload relay has an adjustable current range from 12.5 to 50 Amps. It features a Class 20E tripping characteristic, offering protection suitable for motors with standard starting conditions.