Contactors

Contactors are electrical control components for professionals and maintenance buyers selecting a specified pole configuration, electrical rating, and installation size. This category includes definite-purpose and 3-pole options for compatible electrical installations and electrical control applications where 24 VAC, 120 VAC, or 277 VAC characteristics are required.

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Helpful Buying Guide

How to Choose a Contactor

Compare the electrical characteristics stated for the application first, then confirm the pole configuration, contactor format, and available installation space. The options represented here range from 2-pole definite-purpose contactors to a 3-pole contactor, with listed ratings from 20A to 40A.

Visual Guide

Popular examples in this category

Use Cases

Match the specified control application

Choose a contactor that matches the stated electrical control application or compatible electrical installation requirements.

How to Choose

Start with voltage, poles, and amperage

Compare the listed 24 VAC, 120 VAC, or 277 VAC characteristics alongside the required 2-pole or 3-pole configuration and 20A or 40A rating.

Applications

Options for electrical professionals and maintenance buyers

The represented contactors are intended for buyers specifying components for electrical control applications and compatible electrical installations.

Additional Information

Plan for available space

Use the listed width, depth, height, or overall dimensions to assess available installation space before selecting a contactor.

2-PoleAvailable configuration

Represented in two definite-purpose options.

3-PoleAvailable configuration

Represented in one 40A option.

20A–40AListed ratings

Compare the stated amperage requirement.

24–277 VACListed electrical characteristics

Match the specified VAC requirement.

Comparison Guide

Compare the Represented Contactor Options

Use the listed configuration, electrical characteristics, and dimensions to compare the available product types.

Contactor optionListed electrical characteristicsListed dimensions
2-pole definite-purpose contactor277 VAC; 2-pole3.6 x 4.2 x 2.7 in.
3-pole contactor24 VAC; 40A; 3-pole3.25 in. W x 4 in. D x 2.75 in. H
2-pole definite-purpose contactor120 VAC; 20A; 2-pole3.4 x 5.4 x 2.7 in.
Planning Guide

Plan the right fit before choosing

Compare Electrical Requirements

Select the characteristics specified for the system

The represented choices provide different stated electrical characteristics. One option is identified for compatible 277 VAC electrical installations, another is a 24 VAC, 40A, 3-pole contactor, and another is a 120 VAC, 20A, 2-pole definite-purpose contactor.

  • Match the listed VAC characteristic to the specified requirement.
  • Choose between a 2-pole and 3-pole configuration.
  • Confirm whether the required rating is 20A or 40A.
Choose the Contactor Format

Compare definite-purpose and 3-pole options

Two represented products are identified as definite-purpose contactors with 2-pole configurations. The other represented option is a 3-pole contactor for requirements that call for three poles.

  • Use a 2-pole option when the electrical requirement calls for two poles.
  • Use the 3-pole option when a three-pole contactor is specified.
  • Confirm the stated format together with voltage and amperage requirements.
Check Fit Planning

Review listed dimensions before purchase

Each represented contactor has compact listed dimensions, but the measurements differ. Comparing them with available space helps buyers plan for fit.

  • 277 VAC 2-pole definite-purpose contactor: 3.6 x 4.2 x 2.7 inches.
  • 3-pole 40A 24 VAC contactor: 3.25 in. W x 4 in. D x 2.75 in. H.
  • 2-pole 20A 120 VAC definite-purpose contactor: 3.4 x 5.4 x 2.7 inches.
FAQ

Common questions before buying

What pole configurations are represented in this category?

The represented options include 2-pole definite-purpose contactors and a 3-pole contactor.

What VAC characteristics are listed?

The represented products list 24 VAC, 120 VAC, and 277 VAC characteristics.

What amperage ratings are represented?

The represented contactors include a 20A option and a 40A option.

Why should I compare dimensions?

The listed dimensions help buyers assess available installation space for the contactor.