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Siemens 3RT1526-1AC20 — Contactors

Siemens 3RT1526-1AC20 SIRIUS Power Contactor, S0, 24 V DC

MPN3RT1526-1AC20

Siemens SIRIUS power contactor, S0 frame, 3RT1526-1AC20, 24 V DC coil, 10 A rated current, screw terminals, snap-on DIN rail 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

3RT1526-1AC20 — Identification
ParameterValue
Contactor frame sizeS0
3RT1526-1AC20 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 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
3RT1526-1AC20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz8.4 V·A
Rated value @ 50 Hz24 V
3RT1526-1AC20 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts2
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1526-1AC20 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 63 A
Short-circuit coordination type 2, fusefuse gL/gG: 35 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1526-1AC20 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1526-1AC20 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1526-1AC20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RT1526-1AC20 — Mechanical
ParameterValue
Width61 mm
Height85 mm
Depth91 mm
3RT1526-1AC20 — Specifications
ParameterValue
At AC13 ... 25 ms

Product details

The 10 A rating at 24 V DC is the coil's hold current — it governs the control circuit draw and ensures compatibility with 24 V DC PLC outputs or relay drivers. The auxiliary contact rating of 25 A per NO/NC means the built-in auxiliary stack can switch moderate loads directly without an interposing relay, simplifying panel wiring. The S0 frame size is a standard Siemens footprint shared across the SIRIUS contactor family, so replacement or upgrade within the same frame keeps the same DIN-rail spacing and terminal layout.

The mounting position allows vertical surface mounting with ±180° rotation and ±30° tilt forward/back, giving panel builders flexibility in tight enclosures.

Frequently asked questions

What is the closest functional second-source to 3RT1526-1AC20?

The 3RT1023-1AL20 is a peer in the same SIRIUS family but differs in coil voltage (230 V AC vs 24 V DC) and frame size (S00 vs S0). It will not drop into the same panel without rewiring the control circuit and checking DIN-rail spacing. For a direct functional match, stay with the S0 frame and 24 V DC coil — the 3RT1526-1AC20 is the active standard.

What is the depth of 3RT1526-1AC20?

91 mm. This is standard for the S0 frame and fits typical 200 mm deep enclosures with clearance for wiring.

What wire sizes does the screw terminal accept?

The main circuit terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²) solid or stranded.

Will 3RT1526-1AC20 drop into a panel specified for 3RT1023-1AL20?

Not without changes. The 3RT1023-1AL20 is an S00 frame (smaller footprint) with a 230 V AC coil. The 3RT1526-1AC20 is S0 frame (wider and deeper) with a 24 V DC coil. The DIN-rail mounting is the same standard, but the control voltage and physical space differ — rewiring and possibly a larger enclosure are required.

What compliance documentation does Siemens provide for 3RT1526-1AC20?

As a current SIRIUS product, Siemens provides RoHS, REACH, UL, and IEC declarations. Specific certificates are available through the Siemens Industry Online Support portal. The part carries a rated impulse withstand voltage of 6 kV for both main and auxiliary circuits.

MPN
3RT1526-1AC20