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Siemens 3RB306-1UB0 Electronic Overload Relay for Motor Protection

Siemens 3RB306-1UB0 Electronic Overload Relay

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ManufacturerSiemens

Part number3RB306-1UB0

Current Range 0.1-0.4 A

Size S00

Trip Class 5E-30E

Mounting Contactor Mounting

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CAGE: 9NK75

Electronic Overload Protection Adjustable Current Setting Contactor Mountable Manual/Automatic Reset Phase-Failure Sensitivity Internal Ground Fault Detection

Product description

The Siemens 3RB306-1UB0 is an electronic overload relay designed for reliable motor protection. It features an adjustable current range of 0.1 to 0.4 A and is built for size S00, offering flexibility in installation. This relay provides essential motor protection functions, including overload and phase-failure detection, with adjustable trip classes (5E to 30E) to match motor characteristics and load conditions.

This overload relay is crucial in various industrial applications, including pump control, fan systems, and conveyor belts, where precise motor protection is paramount. It is compatible with Siemens contactors, ensuring a streamlined control panel design. Industries benefiting from this reliable protection include food and beverage, water treatment, and general manufacturing.

Source your Siemens 3RB306-1UB0 from Stanlo Automation, a veteran-owned distributor committed to providing quality surplus industrial automation parts. We offer competitive pricing, fast shipping, and expert support, ensuring you get the components you need to keep your operations running smoothly and efficiently.

Technical specifications

Current Range	0.1-0.4 A
Size	S00
Trip Class	5E-30E
Mounting	Contactor Mounting
Reset	Manual-Automatic
Features	Phase-failure sensitivity, Internal ground fault detection

Common applications

Motor Control Panels

Pump Systems

Fan Systems

Conveyor Belts

HVAC Systems

Industrial Machinery

Compatible systems

Siemens 3RT contactors Various motor control systems

Also known as

Siemens 3RB306-1UB0 overload relay Siemens 0.1-0.4A overload relay SIRIUS 3RB306 electronic relay

Replaces / compatible with

This overload relay is part of the Siemens SIRIUS 3RB3 series and is designed for direct replacement or upgrade of similar Siemens overload relays within the specified current and size range.

Technical note

Expert tip

Ensure proper wiring of auxiliary contacts for remote reset and signaling functions. Consult the manual for specific contactor compatibility.

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Frequently asked questions

What is the adjustable current range for the Siemens 3RB306-1UB0 overload relay?

The Siemens 3RB306-1UB0 overload relay has an adjustable current setting ranging from 0.1 to 0.4 Amperes. This allows for precise matching to the specific motor's full-load current rating for optimal protection.