Siemens SIRIUS 3RU2 Thermal Overload Relay 1NO + 1NC, 57 A F.L.C, 57 A Contact Rating, 3P, SIRIUS

View all Contactor Overload Relays

Subtotal (1 unit)*

MYR1,082.94

Add to Basket
Select or type quantity
Temporarily out of stock
  • 4 unit(s) shipping from 19 December 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per Unit
1 +MYR1,082.94

*price indicative

RS Stock No.:
875-1090
Mfr. Part No.:
3RU2136-4QB0
Manufacturer:
Siemens
Find similar products by selecting one or more attributes.
Select all

Brand

Siemens

FLC Motor Rating

57 A

Contact Current Rating

57 A

Range

SIRIUS

Pole Configuration

3P

Series

SIRIUS 3RU2

Mounting Style

Direct Contactor

Normal State Configuration

1NO + 1NC

Terminal Type

Screw

Reset Method

Automatic, Manual

Number Of Auxiliary Contacts

2

Width

76.5mm

Depth

104.2mm

Length

55mm

Maximum Operating Temperature

+70°C

Minimum Operating Temperature

-40°C

Operating Temperature Range

-40 → +70 °C

Contact Voltage Rating

690 V ac

RoHS Status: Exempt

COO (Country of Origin):
DE

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 Range Contactor & Control Relays

Related links