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Siemens 3RT2535-3XF40-0LA2 — Contactors

Siemens SIRIUS 3RT2535-3XF40-0LA2 Power Contactor, DC Coil 1

MPN3RT2535-3XF40-0LA2

Siemens SIRIUS power contactor, 3RT2535-3XF40-0LA2, S2 size, DC coil 110 V, spring-type terminals, screw and snap-on mounting on 35 mm DIN rail.

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

3RT2535-3XF40-0LA2 — Identification
ParameterValue
Contactor frame sizeS2
3RT2535-3XF40-0LA2 — 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 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2535-3XF40-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2535-3XF40-0LA2 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts2
3RT2535-3XF40-0LA2 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 125 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 63A (690V, 100kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2535-3XF40-0LA2 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
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 50022
Side-by-side mountingYes
3RT2535-3XF40-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2535-3XF40-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2535-3XF40-0LA2 — Mechanical
ParameterValue
Width75 mm
Height114 mm
Depth130 mm

Product details

Integrator's first read

Its DC coil is rated at 110 V, with a spring-type terminal connection for the magnet coil — no screw torque to verify on that circuit, just strip and insert.

DC switching capacity — what the ratings mean

The contactor's DC switching capacity is specified per voltage level, not as a single maximum current. At 24 V it handles 10 A; at 48 V and 60 V, 2 A; at 110 V, 1 A; at 220 V, 0.3 A; at 400 V, 3 A; at 600 V, 0.1 A. These are the make/break ratings for DC loads — resistive or slightly inductive — and they drop sharply above 24 V because DC arcs sustain longer than AC. For AC-4 duty (switching motor loads with inrush), the maximum switching frequency is 300 operations per hour. Main contacts are configured as 3 normally open (3 NO) for the power circuit, plus one auxiliary switch (1 NO/1 NC) for feedback or interlocking. The inrush current peak for the coil is 1.5 A.

Panel layout and wiring

Dimensions: 75 mm wide, 114 mm high, 130 mm deep. These are the minimum free air gaps around the contactor for arc flash and heat dissipation — factor them into your DIN-rail layout. Terminals accept solid or stranded conductors: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) per clamp. The spring-type coil terminal is the same gauge range — no ferrule required but recommended for stranded wire to avoid fraying.

The lifecycle stage for 3RT2535-3XF40-0LA2 is listed as current production. No phase-out or last-time-buy notice is attached to this order code.

Frequently asked questions

What is the closest functional alternative to 3RT2535-3XF40-0LA2?

The 3RT2535-1AB00 and 3RT2535-1AD00 are the same S2 frame size and main contact configuration, but their coil voltages differ — 1AB00 is 24 V AC, 1AD00 is 110 V AC. The 3RT2535-3XF40-0LA2 uses a 110 V DC coil with spring-type terminals, so a swap requires verifying the control circuit voltage and terminal type.

What is the depth of 3RT2535-3XF40-0LA2?

The depth is 130 mm.

What conductor cross-sections does the 3RT2535-3XF40-0LA2 accept?

Solid or stranded: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) per clamp.

Where can I buy 3RT2535-3XF40-0LA2 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RT2535-3XF40-0LA2