Siemens SIRIUS 3RU2 Thermal Overload Relay 1NO + 1NC, 4.5 → 6.3 A F.L.C, 6.3 A Contact Rating, 4 kW, 3P, SIRIUS

RS Stock No.:: 706-1636
Mfr. Part No.:: 3RU2126-1GB0
Brand:: Siemens

Siemens SIRIUS 3RU2 Thermal Overload Relay 1NO + 1NC, 4.5 → 6.3 A F.L.C, 6.3 A Contact Rating, 4 kW, 3P, SIRIUS

Price Each

£44.32

(exc. VAT)

£53.18

(inc. VAT)

4 In stock - FREE next working day delivery available*

2 available from Europe for delivery within 2 working day(s).

* Delivery dates may change based on your chosen quantity and delivery address.

FREE delivery for orders over £50.00

Units	Per unit
1 +	£44.32

RS Stock No.:: 706-1636
Mfr. Part No.:: 3RU2126-1GB0
Brand:: Siemens

Overload Relay - 3RU range

Switch position indicator and test function
STOP button
Selector switch for manual/automatic reset
Screw connection or Spring-clamp versions
Impulse voltage resistance 6 kV
Insulation voltage 690V
Surface or DIN-rail stand-alone mounts available, see 706-1699 etc

The 3RU21 thermal overload relays up to 80 A have been designed for current-sensitive protection of loads with normal starting.
These thermal overload relays for use with Sirius Size S0 & S00 Contactors

Note

Screw terminals can only be used with screw terminal overloads and spring terminals can only be used with spring terminal overloads.

Approvals

CE, UL, CSA

Siemens 3RU Series Overload Relay, 6.3 A Contact Current Rating, 4kW Power Rating - 3RU2126-1GB0

This overload relay is specifically designed for motor protection, ensuring safe operation of electrical equipment. It is vital in safeguarding motors against overload conditions, thereby extending the machinery’s lifespan. The robust features and innovative design make this relay an essential component in industrial automation and electrical applications.

Features & Benefits

• Thermal overload protection for currents between 4.5A and 6.3A
• Offers integrated automatic and manual reset options for enhanced usability
• Configured for 3P installations, providing versatility
• Functional in a temperature range of -40°C to +70°C
• Features screw-type terminals for secure connections
• Supports operational voltage ratings up to 690V AC

Applications

• Utilised for motor protection in various industrial settings
• Suitable for integration into electrical control circuits
• Effective for protecting pumps, conveyors, and compressors
• Commonly employed in automation systems requiring overload trip functions

What is the operating temperature range for optimal performance?

The product operates effectively within -40°C to +70°C.

How is the overload protection reset?

It features both automatic and manual reset methods.

Can it be installed in any orientation?

Yes, the relay allows for installation in any mounting position.

What types of motors can it protect?

It is suitable for standard three-phase AC motors.

What current ratings does it support?

The overload relay supports current ratings between 4.5A and 6.3A.

Attribute	Value
FLC Motor Rating	4.5 → 6.3 A
Contact Current Rating	6.3 A
Range	SIRIUS
Pole Configuration	3P
Series	SIRIUS 3RU2
Mounting Style	Direct Contactor
Power Rating	4 kW
Normal State Configuration	1NO + 1NC
Terminal Type	Screw
Reset Method	Automatic, Manual
Width	45mm
Number Of Auxiliary Contacts	2
Length	87mm
Depth	73mm
Minimum Operating Temperature	-40°C
Maximum Operating Temperature	+70°C
Operating Temperature Range	-40 → +70 °C
Contact Voltage Rating	690 V ac