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Siemens 3RU2136-4FD0 — Overload Relays

Siemens SIRIUS 3RU2136-4FD0 Thermal Overload Relay, CLASS 10

MPN3RU2136-4FD0
Active

Siemens SIRIUS thermal overload relay, 3RU2136-4FD0, CLASS 10, rated 690 V, S2 size, contactor-mount.

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

3RU2136-4FD0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationthermal overload relay
Frame size (overload relay)S2
Combinable contactor sizesS2
Reference code (IEC 81346-2)F
3RU2136-4FD0 — Protection & Trip
ParameterValue
Overload current setting range28 ... 40 A
Trip classCLASS 10
Overload release typethermal
3RU2136-4FD0 — 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 value (AC-3e), max.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
3RU2136-4FD0 — Auxiliary contacts
ParameterValue
Auxiliary contacts: NO1
Auxiliary contacts: NC1
Auxiliary contacts: CO (changeover)0
Auxiliary switch short-circuit protection (required fuse)fuse gG: 6 A, quick: 10 A
Switching current at 24 V2 A
Switching current at 60 V0.3 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
3RU2136-4FD0 — Connection & Mounting
ParameterValue
Mounting / fastening methodContactor mounting
Mounting positionany
Main-circuit connector arrangementTop and bottom
Auxiliary/control circuit connection typespring-loaded terminals
Removable aux./control terminalNo
Conductor cross-section: solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section: finely stranded with ferrule2x (0.5 ... 1.5 mm²)
Conductor range (AWG), main contacts2x (18 ... 2), 1x (18 ... 1)
Conductor range (AWG), auxiliary contacts2x (20 ... 14)
3RU2136-4FD0 — Environmental
ParameterValue
Operating temperature-40 ... +70 °C
Storage temperature-55 ... +80 °C
Transport temperature-55 ... +80 °C
Relative humidity, operating10 ... 95 %
Max. installation altitude2 000 m
3RU2136-4FD0 — Mechanical
ParameterValue
Width55 mm
Height90 mm
Depth105 mm

Product details

Rated for 690 V, it handles motor loads up to 18.5 kW at 400 V and 37 kW at 690 V. The auxiliary switch is integrated, and the overload release is thermal with temperature compensation from -40 to +60 °C, so it stays accurate across typical plant-floor conditions.

Fastens directly to the contactor (contactor mounting), no DIN rail required. Dimensions: 55 mm wide, 90 mm high, 105 mm deep — fits standard S2 footprint. Screw-type terminals for the main circuit; accepts 2× (0.5 to 2.5 mm²) solid or stranded wire. Use a Pozidriv PZ 2 tip, shaft diameter 5–6 mm.

Frequently asked questions

What is the 'Note for message Tripped' about?

The part carries a note 'for message Tripped' — this is a signaling output that changes state when the relay trips, used to feed a PLC or indicator lamp.

What are the key ratings for this overload relay?

CLASS 10 trip, rated voltage 690 V, motor power up to 18.5 kW at 400 V and 37 kW at 690 V. Auxiliary contact ratings include 2 A at 24 V, 3 A at 120 V, and 2 A at 230 V.

Does the 3RU2136-4FD0 mount on a DIN rail?

No, it uses contactor mounting — fastens directly to the contactor, not on a DIN rail.

MPN
3RU2136-4FD0