Siemens SIRIUS 3RU2 Thermal Overload Relay 1NO + 1NC, 1.8 → 2.5 A F.L.C, 2.5 A Contact Rating, 0.75 kW, 3P,

RS stock no.:: 706-1544
Mfr. Part No.:: 3RU2116-1CB0
Manufacturer:: Siemens

Siemens SIRIUS 3RU2 Thermal Overload Relay 1NO + 1NC, 1.8 → 2.5 A F.L.C, 2.5 A Contact Rating, 0.75 kW, 3P,

Subtotal (1 unit)**

R 1 054,15

(exc. VAT)

R 1 212,27

(inc. VAT)

11 Available from UK/Europe in 4–6 working days for collection or delivery to major cities (Heavy, hazardous or lithium product excluded. Delivery T&C's apply)*

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

FREE delivery for orders over R 1500

Not Available for premium delivery

Units	Per unit
1 +	R 1 054,15

**price indicative

RS stock no.:: 706-1544
Mfr. Part No.:: 3RU2116-1CB0
Manufacturer:: 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 SIRIUS 3RU2 Series Thermal Overload Relay, 2.5A Contact Current Rating, 0.75kW Power Rating - 3RU2116-1CB0

This thermal overload relay is essential for protecting motors from overheating and damage caused by excessive current. It ensures operational safety and reliability in automation and electrical applications. Designed for efficient performance, it accommodates a broad range of current ratings and includes features that simplify monitoring and maintenance of electrical systems.

Features & Benefits

• Designed with a 3P pole configuration for versatile Applications
• Supports both automatic and manual reset methods
• Suitable for motors with a full load current of 1.8 to 2.5A
• Equipped with screw terminals for secure electrical connections
• Features two auxiliary contacts for enhanced functionality

Applications

• Compatible with direct contactors for seamless integration
• Utilised in industrial machinery for effective motor protection
• Applicable in HVAC systems to prevent motor overheating
• Used in conveyors to safeguard against electrical faults

How does the reset work after an overload condition?

The relay can be reset automatically or manually, offering flexibility in operation.

Can it handle different types of motors?

Yes, it is suitable for various motor types within the 1.8 to 2.5A rating.

What are the installation requirements for this relay?

It is designed for direct mounting, requiring minimal space and straightforward wiring.

Is there a way to check the status of the relay?

The two auxiliary contacts can monitor the operational status.

What is the significance of the temperature range specified?

The specified temperature range ensures reliable performance under diverse climatic conditions, enhancing safety and longevity.

Attribute	Value
FLC Motor Rating	1.8 → 2.5 A
Contact Current Rating	2.5 A
Range	SIRIUS
Pole Configuration	3P
Series	SIRIUS 3RU2
Mounting Style	Direct Contactor
Power Rating	0.75 kW
Normal State Configuration	1NO + 1NC
Reset Method	Automatic, Manual
Terminal Type	Screw
Number Of Auxiliary Contacts	2
Width	45mm
Length	87mm
Depth	70mm
Minimum Operating Temperature	-40°C
Maximum Operating Temperature	+70°C
Operating Temperature Range	-40 → +70 °C
Contact Voltage Rating	690 V ac