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Siemens 3RU7136-4FB0 — Overload Relays

Siemens 3RU7136-4FB0 SIRIUS Thermal Overload Relay, 40 A, Cl

MPN3RU7136-4FB0

Siemens SIRIUS thermal overload relay, 3RU7136-4FB0, size S2, 40 A rated current, Trip Class 10, screw-type terminals, contactor mounting.

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

3RU7136-4FB0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationThermal overload relay
Frame size (overload relay)S2
Combinable contactor sizesS2
3RU7136-4FB0 — Protection & Trip
ParameterValue
Overload current setting range28 ... 40 A
Trip classCLASS 10
Overload release typethermal
3RU7136-4FB0 — Electrical (main circuit)
ParameterValue
Rated operational current40 A
Poles (main circuit)3
Rated operating frequency50 ... 60 Hz
Rated insulation voltage (AC, pollution degree 3)690 V
Rated surge withstand voltage6 kV
Main current circuitscrew-type terminals
Power loss at rated current (hot)15.6 W
Per pole5.2 W
3RU7136-4FB0 — Auxiliary contacts
ParameterValue
Switching current at 24 V3 A
Switching current at 230 V2 A
3RU7136-4FB0 — Connection & Mounting
ParameterValue
Mounting / fastening methodContactor mounting
Mounting positionwith vertical mounting surface +/-135° rotatable, with vertical mounting surface +/- 45° tiltable to the front and back
Main-circuit connector arrangementTop and bottom
Auxiliary/control circuit connection typescrew-type terminals
Conductor cross-section: solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section: finely stranded with ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
3RU7136-4FB0 — Environmental
ParameterValue
Operating temperature-20 ... +55 °C
Transport temperature-25 ... +70 °C
Relative humidity, operating0 ... 90 %
Max. installation altitude2 000 m
3RU7136-4FB0 — Mechanical
ParameterValue
Width55 mm
Height105 mm
Depth118 mm

Product details

The Siemens 3RU7136-4FB0 is a SIRIUS thermal overload relay, size S2, rated 40 A operational current at 690 V AC/DC, Trip Class 10. It mounts directly onto a S2 contactor — no separate DIN-rail footprint needed — and protects a 3-phase motor against sustained overloads.

Fastens directly to a S2 contactor (screw-type main circuit terminals top and bottom). Side spacing to grounded parts needs 6 mm minimum. Screw terminals for main circuit accept 2x (0.5…1.5 mm²) solid or stranded, torque 3–4.5 N·m. Auxiliary terminals take 2x (0.5…1.5 mm²) at 0.8–1.2 N·m.

Frequently asked questions

Where can I buy 3RU7136-4FB0 and how do I get a price?

This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing.

What are the key ratings of 3RU7136-4FB0?

Rated operational current 40 A at 690 V AC/DC, Trip Class 10, auxiliary contacts rated 1 A at 24 V DC-13, total power loss 15.6 W.

What is 3RU7136-4FB0's listed depth (118 mm) on this component line?

Depth is 118 mm, width 55 mm, height 105 mm.

MPN
3RU7136-4FB0