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Siemens 3RU7136-1HB0 — Overload Relays

Siemens 3RU7136-1HB0 SIRIUS Thermal Overload Relay, 8 A, Cla

MPN3RU7136-1HB0

Siemens SIRIUS thermal overload relay, 3RU7136-1HB0, Size S2, 8 A rated operational current, Class 10 trip, screw-type terminals, IP20 front / IP00 terminals.

Siemens 3RU7136-1HB0 datasheet (PDF)
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

3RU7136-1HB0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationThermal overload relay
Frame size (overload relay)S2
Combinable contactor sizesS2
3RU7136-1HB0 — Protection & Trip
ParameterValue
Overload current setting range5.5 ... 8 A
Trip classCLASS 10
Overload release typethermal
3RU7136-1HB0 — Electrical (main circuit)
ParameterValue
Rated operational current8 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)7.5 W
Per pole2.5 W
3RU7136-1HB0 — Auxiliary contacts
ParameterValue
Switching current at 24 V3 A
Switching current at 230 V2 A
3RU7136-1HB0 — 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)
3RU7136-1HB0 — Environmental
ParameterValue
Operating temperature-20 ... +55 °C
Transport temperature-25 ... +70 °C
Relative humidity, operating0 ... 90 %
Max. installation altitude2 000 m
3RU7136-1HB0 — Mechanical
ParameterValue
Width55 mm
Height105 mm
Depth118 mm

Product details

Integrator note

The Siemens 3RU7136-1HB0 is a SIRIUS Size S2 thermal overload relay rated for 8 A operational current at 690 V, 50/60 Hz, with a Class 10 trip characteristic — meaning it protects standard induction motors during start-up without nuisance tripping on normal acceleration.

Mounting & wiring

Fastens directly to a S2 contactor via the contactor mounting method. Wire range accepts 2x (0.5…1.5 mm²) solid/stranded or 2x (0.75…2.5 mm²) with ferruled ends. Torque for main circuit screws: 3–4.5 N·m; auxiliary contacts: 0.8–1.2 N·m.

Electrical ratings

Three-pole main circuit, AC/DC voltage type. Auxiliary contacts rated 1 A at DC-13 / 24 V. Surge voltage withstand 6 kV. Ambient operating temperature -20 to +55 °C; transport -25 to +70 °C. Installation altitude up to 2000 m above sea level.

Frequently asked questions

How do I get current pricing and availability for 3RU7136-1HB0?

Submit an RFQ through this listing; the part is sourced to order through independent distribution, and availability and pricing are confirmed at quote time.

What is the closest functional second-source for 3RU7136-1HB0?

The 3RT1023-1AP00 is a contactor in the same S2 frame size; the 3RU7136-1HB0 is designed to mount directly onto it without rewiring, using the same screw-terminal pattern and footprint.

What are the key dimensions of 3RU7136-1HB0?

Width 55 mm, height 105 mm, depth 118 mm.

MPN
3RU7136-1HB0