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Siemens 3RU1136-4BB0 — Overload Relays

Siemens 3RU1136-4BB0 SIRIUS Thermal Overload Relay, CLASS 10

MPN3RU1136-4BB0

Siemens SIRIUS thermal overload relay, 3RU1136-4BB0, size S2, CLASS 10 trip, screw-type terminals, IP20 front protection.

Siemens 3RU1136-4BB0 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

3RU1136-4BB0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationthermal overload relay
Frame size (overload relay)S2
Combinable contactor sizesS2
Reference code (IEC 81346-2)F
3RU1136-4BB0 — Protection & Trip
ParameterValue
Overload current setting range14 ... 20 A
Trip classCLASS 10
3RU1136-4BB0 — Electrical (main circuit)
ParameterValue
Poles (main circuit)3
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)10.5 W
Per pole3.5 W
3RU1136-4BB0 — Auxiliary contacts
ParameterValue
Auxiliary contacts: NO1
Auxiliary contacts: NC1
Auxiliary contacts: CO (changeover)0
Auxiliary switch short-circuit protection (required fuse)fuse gL/gG: 6 A, quick: 10 A
Switching current at 24 V1 A
Switching current at 110 V0.22 A
Switching current at 120 V3 A
Switching current at 125 V0.22 A
Switching current at 220 V0.11 A
Switching current at 230 V2 A
Switching current at 400 V1 A
3RU1136-4BB0 — 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
Auxiliary/control circuit connection typescrew-type terminals
Removable aux./control terminalNo
Conductor cross-section: solid2x (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)
Conductor range (AWG), auxiliary contacts2x (20 ... 16), 2x (18 ... 14)
3RU1136-4BB0 — Environmental
ParameterValue
Operating temperature-20 ... +70 °C
Storage temperature-55 ... +80 °C
Transport temperature-55 ... +80 °C
Relative humidity, operating100 %
Max. installation altitude2 000 m
Shock resistance8g / 10 ms
3RU1136-4BB0 — Mechanical
ParameterValue
Width55 mm
Height105 mm
Depth118 mm
3RU1136-4BB0 — Specifications
ParameterValue
Type Of ProtectionDMT 98 ATEX G 001

Product details

The Siemens 3RU1136-4BB0 is a SIRIUS thermal overload relay, size S2, with CLASS 10 trip protection. It mounts directly onto a contactor and has IP20 front protection.

The relay uses screw-type terminals for both the main current circuit and the auxiliary/control circuit. The main circuit accepts stranded wire up to 35 mm² and solid wire in the range 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²). Auxiliary contact wiring accepts AWG 20–16 and 18–14. The 3.5 W dissipation per pole is typical for this size — factor it into enclosure heat calculations if you're packing multiple relays side by side.

Mounting position is flexible: the relay can be rotated ±135° on a vertical surface or tilted ±45° forward/back. That helps when you're fitting it into a tight panel layout. Shock resistance is rated at 8 g for 10 ms. The side clearance required is 6 mm; no clearance needed upwards, forwards, backwards, or downwards.

Frequently asked questions

What is the closest functional second-source for 3RU1136-4BB0?

The peer 3RU2116-1FC1 is a similar SIRIUS thermal overload relay but in a different frame size (S0 vs S2 for the 3RU1136-4BB0). The 3RU1136-4BB0 is size S2 and mounts directly onto a contactor; the 3RU2116-1FC1 is a smaller S0 frame. They are not drop-in replacements without rewiring or panel modifications.

MPN
3RU1136-4BB0