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ABB B 75 — Contactors

ABB B 75 Contactor, (690 V) 40 kW, 48-55 V AC Coil

MPNB 75
End of Life

ABB, B 75 contactor, (690 V) 40 kW, 48-55 V AC coil, 50/60 Hz, 3 NO main contacts, 1 NO + 1 NC auxiliary, 1000 V rated insulation voltage, 82 x 108 x 110 mm.

$60.00Ref. price · indicative, final on quote
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

B 75 — Specifications
ParameterValue
(690 V) 40 kW
TypeContactor
ModelB 75
Weight1,04 kg
ConditionNew
Shelf no.241203
Coil voltage48 … 55 V AC
Coil frequency50 / 60 Hz
Type of productContactor
Auxiliary contacts1 Normally Closed, 1 Normally open
Rated operational power(
Voltage1000 V
Number of main contacts NO3
Dimension ( width x depth x height )82 x 108 x 110 mm

Product details

The ABB B 75 is a three-pole contactor rated for (690 V) 40 kW switching capacity, with a coil that pulls in on 48-55 V AC at 50/60 Hz. That power rating is the AC-3 motor-switching figure — the one that matters for sizing against a motor load, not the resistive AC-1 number.

Integration Notes

The B 75 occupies an 82 x 108 x 110 mm footprint — a standard contactor envelope for this power class, suitable for DIN-rail or panel-mount integration. The three NO main contacts handle the power circuit; the built-in auxiliary stack gives one NO and one NC for feedback or interlocking without an add-on block. Coil draws on a 48-55 V AC control supply, common in older European panel designs running on 50/60 Hz control transformers.

Frequently asked questions

What is the (690 V) 40 kW rating on the B 75?

That is the rated operational power for motor switching (AC-3 duty) at 690 V — the figure you size the contactor against for a three-phase motor load. At lower voltages the current capacity scales up, but the power figure is the direct selection parameter for a given motor kW.

What coil voltage does the B 75 use?

The coil is rated 48-55 V AC, 50/60 Hz. That is a non-standard control voltage in modern panels — verify your control transformer taps before wiring.

Where can I buy the ABB B 75?

The B 75 is sourced to order against an RFQ through independent distribution channels. Submit an RFQ for current availability and pricing — no stock count or lead-time number is published here.

MPN
B 75