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Siemens 3RT2035-1CP04 — Contactors

Siemens 3RT2035-1CP04 SIRIUS Power Contactor, Size S2, 55 mm

MPN3RT2035-1CP04
Active

Siemens SIRIUS power contactor, Size S2, 3RT2035-1CP04, 55 mm width, screw-type terminals, 480 V 40 A AC-3 rated, screw and snap-on 35 mm DIN rail mount.

Siemens 3RT2035-1CP04 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

3RT2035-1CP04 — Identification
ParameterValue
Contactor frame sizeS2
3RT2035-1CP04 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V35 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V7.5 hp
Rated value @ 24 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2035-1CP04 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.37
Rated value @ 50 Hz230 V
3RT2035-1CP04 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2035-1CP04 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 160 A (690 V, 100 kA), aM: 80 A (690 V, 100 kA), BS88: 125 A (415 V, 80 kA)
Short-circuit coordination type 2, fusegG: 80A (690V,100kA), aM: 50A (690V,100kA), BS88: 63A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2035-1CP04 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2035-1CP04 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2035-1CP04 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2035-1CP04 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth174 mm
3RT2035-1CP04 — Specifications
ParameterValue
At AC10 ... 18 ms

Product details

SIRIUS Size S2 power contactor — 480 V 40 A AC-3, screw terminals, DIN rail

The Siemens 3RT2035-1CP04 is a SIRIUS Size S2 power contactor rated for 40 A at 480 V in AC-3 duty, making it the right fit for switching three-phase motor loads up to that current in a 480 V line. The screw-type coil terminals accept 2x (0.5…1.5 mm²) or 2x (0.75…2.5 mm²) solid or stranded wire, so it integrates cleanly into a panel built around traditional screw-clamp wiring.

Switching frequency and duty-cycle capability

This contactor is rated for 1 200 operations per hour in AC-1 (resistive) duty, 1 000/h in AC-3 (motor starting) and AC-3e duty, 750/h in AC-2 (slip-ring motor), and 300/h in AC-4 (plugging/inching). For a motor-driven conveyor or pump cycling every few seconds, the AC-3 figure of 1 000/h — roughly one operation every 3.6 seconds — is the practical ceiling. Exceeding that rate in AC-4 duty accelerates contact wear; the 300/h limit there reflects the heavier arc stress of reversing or inching.

The 174 mm depth includes the contactor body and terminal projection; plan for that when laying out the DIN rail against the enclosure backplate.

Frequently asked questions

Where can I buy 3RT2035-1CP04 and how do I get a price?

The 3RT2035-1CP04 is available to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote.

What are the key ratings of 3RT2035-1CP04?

The 3RT2035-1CP04 is a SIRIUS Size S2 power contactor rated 40 A at 480 V in AC-3 duty, with screw-type terminals, 55 mm width, and a switching frequency of 1 000 operations per hour in AC-3. Operating temperature range is -25 to +60 °C.

Will 3RT2035-1CP04 drop into a panel specified around 3RT2024-1AL20-ZX95 without rewiring?

The 3RT2035-1CP04 is a Size S2 frame (55 mm wide) while the 3RT2024-1AL20-ZX95 is a different frame size. Panel fit depends on the existing DIN rail layout and terminal wiring; verify the mounting footprint and terminal compatibility before substitution.

What compliance documentation is available for 3RT2035-1CP04?

As a Siemens SIRIUS product, the 3RT2035-1CP04 typically carries CE, UL, CSA, and CCC certifications. RoHS and REACH compliance declarations are available from Siemens. Specific approval markings should be verified against the unit's rating plate for the target jurisdiction.

MPN
3RT2035-1CP04