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Siemens 3RT2018-2BB42-1AA0-ZW96 — Contactors

Siemens 3RT2018-2BB42-1AA0-ZW96 SIRIUS S00 Power Contactor,

MPN3RT2018-2BB42-1AA0-ZW96
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Siemens SIRIUS S00 power contactor, 3RT2018-2BB42-1AA0-ZW96, 24 VDC coil, 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

3RT2018-2BB42-1AA0-ZW96 — Identification
ParameterValue
Contactor frame sizeS00
3RT2018-2BB42-1AA0-ZW96 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V11.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V2 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2018-2BB42-1AA0-ZW96 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2018-2BB42-1AA0-ZW96 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2018-2BB42-1AA0-ZW96 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 50A (690V,100kA), aM: 25A (690V,100kA), BS88: 50A (415V,80kA)
Short-circuit coordination type 2, fusegG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2018-2BB42-1AA0-ZW96 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid0.5 ... 4 mm²
Conductor cross-section, solid or stranded2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2018-2BB42-1AA0-ZW96 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2018-2BB42-1AA0-ZW96 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2018-2BB42-1AA0-ZW96 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm

Product details

The S00 frame keeps the footprint tight at 45 mm wide, 70 mm tall, and 73 mm deep — useful when packing multiple contactors into a panel row. DC switching capacity is rated at 10 A at 24 V, 2 A at 48 V or 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. That spread tells you this contactor handles low-voltage DC loads well — think solenoid valves, DC motor brakes, or control transformers — but the current drops fast as voltage climbs. The arcing time sits between 10 and 15 ms, with a DC operating time of 7 to 13 ms. Maximum switching frequency varies by duty: 1,000 cycles/hour at AC-1 (resistive), 750 at AC-2 and AC-3 (motor starting/running), and 250 at AC-4 (plugging/inching).

Mounting position is standing on a horizontal surface. That side clearance is tighter than the others — if you're packing contactors side-by-side on the DIN rail, you can butt them closer than you can stack them vertically. The spring-type terminals accept 0.5 to 4 mm² solid or stranded wire, or 2x (0.5 to 4 mm²) for paralleled feeds. The storage limit matters if this sits in an unheated warehouse — it can take the cold, but don't energize it below -25 °C.

Frequently asked questions

What is the closest functional second-source to 3RT2018-2BB42-1AA0-ZW96?

The peer variant 3RT2018-2BB42-ZX95 shares the same S00 frame and 24 VDC coil, but the -ZX95 suffix typically indicates a special version (e.g., different auxiliary contact configuration or packaging). The -1AA0-ZW96 variant includes the auxiliary switch. Panel fit is identical — same footprint, same DIN-rail mounting — so no rewiring needed if you swap between them, but verify the auxiliary contact count matches your schematic.

Where can I buy 3RT2018-2BB42-1AA0-ZW96?

This part is sourced and quoted to order through independent industrial distribution. Submit an RFQ for current pricing and availability — confirmed at quote time, no stock figures held on this listing.

MPN
3RT2018-2BB42-1AA0-ZW96