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Siemens 3RU1136-4DD0 — Overload Relays

Siemens 3RU1136-4DD0 SIRIUS Thermal Overload Relay, CLASS 10

MPN3RU1136-4DD0

Siemens SIRIUS 3RU1136-4DD0 thermal overload relay, Size S2, CLASS 10 trip class, IP20 front protection, ATEX certified for explosive atmospheres.

Siemens 3RU1136-4DD0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RU1136-4DD0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationthermal overload relay
Frame size (overload relay)S2
Combinable contactor sizesS2
Reference code (IEC 81346-2)F
3RU1136-4DD0 — Protection & Trip
ParameterValue
Overload current setting range18 ... 25 A
Trip classCLASS 10
3RU1136-4DD0 — 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
3RU1136-4DD0 — 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
3RU1136-4DD0 — 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 typeCage Clamp terminals
Removable aux./control terminalNo
Conductor cross-section: solid2x (0.5 ... 2.5 mm²)
Conductor cross-section: finely stranded with ferrule2x (0.5 ... 1.5 mm²)
Conductor range (AWG), main contacts2x (18 ... 3), 1x (18 ... 1)
Conductor range (AWG), auxiliary contacts2x (20 ... 14)
3RU1136-4DD0 — 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
3RU1136-4DD0 — Mechanical
ParameterValue
Width55 mm
Height105 mm
Depth118 mm
3RU1136-4DD0 — Specifications
ParameterValue
Type Of ProtectionDMT 98 ATEX G 001

Product details

Motor protection relay with CLASS 10 trip curve

The Siemens 3RU1136-4DD0 is a SIRIUS thermal overload relay designed to protect motors against overload and phase failure. Rated for the Size S2 frame, this relay mounts directly to a contactor via the fastening method specified, saving DIN-rail space in the panel. The IP20 front protection allows safe operation in enclosed control cabinets where accidental finger contact is possible.

ATEX certification and compliance documentation

The 3RU1136-4DD0 carries ATEX certification (DMT 98 ATEX G 001), confirming its suitability for use in potentially explosive atmospheres — a requirement for motor protection in Zone 1 or Zone 2 gas environments. The relay meets the substance prohibitance date of 07/01/2006, aligning with RoHS compliance for the European market.

Physical dimensions and mounting clearances

The relay measures 55 mm wide, 105 mm high, and 118 mm deep. This tight clearance profile allows dense packing in the enclosure without forced air gaps.

Frequently asked questions

What compliance documentation does the 3RU1136-4DD0 carry?

It is ATEX certified (DMT 98 ATEX G 001) for explosive atmospheres and meets the substance prohibitance date of 07/01/2006, consistent with RoHS compliance. The IP20 front protection is also documented.

MPN
3RU1136-4DD0