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Siemens 3RP1540-1AW31 — Time Delay Relays

Siemens 3RP1540-1AW31 SIRIUS Time Relay, 24-240 V UC, 0.05-6

MPN3RP1540-1AW31

Siemens SIRIUS 3RP1540-1AW31 time relay, 24-240 V UC, 1 changeover contact, adjustable time 0.05-600 s, 5 A thermal current, screw and snap-on mounting on 35 mm DIN rail.

$138.00Ref. price · indicative, final on quote
Siemens 3RP1540-1AW31 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RP1540-1AW31 — Identification
ParameterValue
Product designationtiming relay
3RP1540-1AW31 — Timing
ParameterValue
ON-delayNo
OFF-delayNo
Delayed switching1
At 24 V1 A
Influence of ambient temperature±5 %
3RP1540-1AW31 — Electrical
ParameterValue
Control supply voltage type (AC/DC)AC/DC
At 50 Hz24 ... 240 V
At 60 Hz24 ... 240 V
Rated surge voltage withstand4 000 V
Initial value0.85
Full-scale value1.1
3RP1540-1AW31 — Output / Contacts
ParameterValue
At 250 V0.1 A
At 125 V0.2 A
3RP1540-1AW31 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-40 ... +85 °C
Transport temperature range-40 ... +85 °C
Operating humidity range10 ... 95 %
IP protection ratingIP20
Pollution degree3
Max. installation altitude2 000 m
Shock resistance (IEC 60068-2-27)11g / 15 ms
Vibration resistance (IEC 60068-2-6)10 ... 55 Hz / 0.35 mm
ESD immunity (IEC 61000-4-2)4 kV contact discharge / 8 kV air discharge
Burst immunity (IEC 61000-4-4)2 kV network connection / 1 kV control connection
3RP1540-1AW31 — Mechanical
ParameterValue
Fastening methodscrew and snap-on mounting onto 35 mm DIN rail
Mounting positionany
Removable terminalsYes
Width22.5 mm
Height83 mm
Depth91 mm
Wire range, solid (AWG)20 ... 14
Wire range, stranded (AWG)20 ... 14
Wire range, finely stranded w/ ferrule (mm²)0.5 ... 2.5 mm²
Clearance, rear0 mm
Clearance, front0 mm
Clearance, sides0 mm
Clearance, top0 mm
Clearance, bottom0 mm

Product details

The Siemens 3RP1540-1AW31 is a SIRIUS time relay with a single changeover contact, adjustable ON-delay from 0.05 s to 600 s, and a universal control supply of 24-240 V UC (AC/DC). It carries a rated thermal current of 5 A, switching up to 1 A at 24 V DC, 0.2 A at 125 V DC, or 0.1 A at 250 V DC — enough for PLC inputs, contactor coils, or indicator loads in a control panel.

Zero clearance required on all sides (upwards, downwards, forwards, backwards, at the side all listed as 0 mm), so it can be packed tight against other devices in a crowded panel.

Frequently asked questions

Is 3RP1540-1AW31 available via RFQ confirmation and what is the lead time for an order?

Availability and lead time are confirmed at quote time against an RFQ. Submit a request with quantity for current pricing and delivery.

What is 3RP1540-1AW31's listed depth on this component line?

The depth is 91 mm, with a width of 22.5 mm and height of 83 mm.

Will 3RP1540-1AW31 drop into a panel that was specified around 3RH6140-1BF40 without rewiring?

No — the 3RP1540-1AW31 is a time relay with a different function and terminal layout than the 3RH6140-1BF40 contactor relay. Panel wiring would need to be re-routed.

MPN
3RP1540-1AW31