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Siemens 3RU5176-5JB1 — Overload Relays

Siemens 3RU5176-5JB1 SIRIUS Thermal Overload Relay, 3.5–5 A

MPN3RU5176-5JB1

Siemens SIRIUS, Thermal overload relay, 3RU5176-5JB1, adjustable current response 3.5–5 A, Class 10, size S12, screw terminals, manual/automatic reset.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RU5176-5JB1 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationThermal overload relay
3RU5176-5JB1 — Protection & Trip
ParameterValue
Overload current setting range3.5 ... 5 A
3RU5176-5JB1 — Electrical (main circuit)
ParameterValue
Rated operational current5 A
Poles (main circuit)3
Rated operating frequency50 ... 60 Hz
Rated surge withstand voltage8 kV
Per pole0 W
3RU5176-5JB1 — Environmental
ParameterValue
Transport temperature-55 ... +80 °C
Relative humidity, operating0 ... 100 %
3RU5176-5JB1 — Other specifications
ParameterValue
Substance prohibitance09/03/2013

Product details

Its adjustable current response range of 3.5 to 5 A lets you dial in the exact full-load current of the motor it guards — set it to the nameplate FLA and the Class 10 trip curve clears a stalled rotor fast enough to keep the winding insulation intact. The 8 kV surge voltage resistance means it holds up against switching transients common on 400 V line-fed contactor panels.

Deployment context: panel integration

Mounts as a stand-alone overload relay on a DIN rail or screw-fixed to a backplate. The main circuit uses screw terminals; the auxiliary circuit also uses screw terminals. Manual or automatic reset is selectable on the front.

Frequently asked questions

Where can I buy 3RU5176-5JB1 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ to receive a firm price and lead time.

What is the adjustable current range of 3RU5176-5JB1?

The adjustable current response value is 3.5 to 5 A, which sets the overload trip point for the motor it protects.

What compliance documentation does Siemens provide for 3RU5176-5JB1?

The evidence includes a substance prohibitance date of 09/03/2013, indicating RoHS/REACH compliance. The part carries the SIRIUS brand and is designed to IEC/UL standards typical for thermal overload relays.

MPN
3RU5176-5JB1