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ABB A145-30-11 3-Pole AC Contactor

ABB A145-30-11 3-Pole AC Contactor

Item NO.: 3742388
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Detail

  • Product NameABB A145-30-11 3-Pole AC Contactor
  • Item NO.3742388
  • Weight3.5000 kg = 7.7162 lb = 123.4589 oz
  • CategoryDCS
  • BrandABB
  • Creation Time2026-08-20
ABB A145-30-11 3-Pole AC Contactor | HTML Preview

ABB A145-30-11 3-Pole AC Contactor

ManufacturerABBModelA145-30-11Product Type3-Pole AC Contactor

01Product Overview

ABB A145-30-11 is an A-line, AC-operated, three-pole block contactor for controlling three-phase motors and power circuits. The base type includes one normally open and one normally closed auxiliary contact. Because ABB supplied the type with several control-coil voltages, the complete ordering code and coil suffix must be verified before selection.

Selection Priority

Match the complete model or article number, hardware variant, ratings, installed system, and connection arrangement before ordering.

02Specifications

Manufacturer ABB
Type A145-30-11
Product Category 3-pole block contactor
Control Circuit AC operated
Main Poles 3
Auxiliary Contacts Fitted 1 NO + 1 NC
Rated Operational Current, AC-3 at 400 V 145 A
Rated Motor Power, AC-3 at 400 V 75 kW
Rated Operational Current, AC-1 at 40 deg C 250 A
Main Circuit Capability Up to 690 / 1000 V AC or 220 V DC, subject to catalog conditions
Ordering Requirement Full coil-voltage suffix required

03Features

Design and Function

  • Block-type construction with three main poles.
  • One normally open and one normally closed auxiliary contact are fitted.
  • Side-mounted auxiliary contact blocks and a broad accessory range are supported.
  • AC-operated control circuit with coil options identified by the complete ordering code.
  • Ratings cover motor-control duty and general power-circuit switching under the applicable utilization category.

Product Identity

Model: A145-30-11

Type: 3-Pole AC Contactor

Manufacturer: ABB

04Applications

  • Switching three-phase motors in industrial control panels.
  • Controlling AC power circuits within the published contactor ratings.
  • Use in approved motor starters and coordinated protection assemblies.
  • Replacement of an installed A145-30-11 after coil voltage, overload relay, interlock, and accessories are confirmed.

05Lifecycle & Replacement

  • ABB cross-reference material associates A145-30-11 with the AF140-30-11B family for modernization.
  • The AF family reference is not a complete ordering code; control voltage, terminals, accessories, overload protection, and mechanical fit must be checked.
  • Record the full A145 order code before removing the installed contactor.
  • Isolate all power and control circuits and follow ABB installation instructions during replacement.
  • Confirm the motor duty, utilization category, and coordinated protection before commissioning.

06FAQ

What is ABB A145-30-11?

It is an AC-operated, three-pole block contactor for three-phase motor and power-circuit control.

How many auxiliary contacts are fitted?

The A145-30-11 base type includes one normally open and one normally closed auxiliary contact.

What is the AC-3 current rating at 400 V?

ABB lists 145 A for AC-3 duty at 400 V.

What motor power is listed at 400 V?

ABB lists 75 kW for AC-3 motor duty at 400 V.

Why must the coil suffix be checked?

A145-30-11 was offered with several AC coil voltages, and the full ordering code identifies the required coil.

Can AF140-30-11B be installed directly?

Not automatically. ABB cross-reference material identifies that family, but the exact coil, accessories, protection, terminals, and mechanical arrangement must be verified.

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