920310030 ASCO 920 Lighting Contactor, 3-Pole 100A, 120V Coil, Sub-Panel

920310030 ASCO 920 Lighting Contactor, 3-Pole 100A, 120V Coil, Sub-Panel

Trying to figure out if the ASCO 920310030 is the right part for your lighting setup? Here is the plain version: this is a lighting contactor - an electrically operated switch that turns large lighting circuits on and off - rated for three poles at 100 amps each, controlled by a 120-volt coil. It is the open sub-panel style, meaning the switch arrives on a flat mounting plate (a backer plate) ready to install inside an electrical enclosure or lighting panel.

It is mechanically held, so it stays in position without drawing power once switched, and it handles high startup surges from lighting without needing to be downsized. It is UL listed and CSA approved, so it meets recognized safety standards.

Common Applications

• Switching large groups of lights in commercial buildings
• Lighting panels that turn circuits on and off automatically
• Works with timers, photocells, and occupancy sensors
• Metal halide, mercury vapor, halogen, tungsten, and fluorescent lighting
• Replacing an existing 920 contactor of the same rating

Key Features

• Open sub-panel mount: Comes on a backer plate to install in an enclosure or panel.
• Mechanically held: Stays switched without using continuous power.
• No downsizing for surges: Handles the full 100A on high-inrush lighting.
• Easy to check: Visual indicators show whether each contact is open or closed.
• Manual operation: Can be moved by hand during inspection.
• Safety listed: UL listed and CSA approved.

Specifications

• Manufacturer: ASCO
• Catalog Number: 920310030
• Series: 920
• Poles: 3
• Current Rating: 100A per pole
• Coil Voltage: 120V AC
• Service Voltage: Up to 600V AC
• Mounting: Sub-panel / open backer plate
• Listings: UL 508, meets UL 67, CSA

Product Identification

• Dimensions: 7.94 in W x 11.5 in H x 3.88 in D
• Approx. Shipping Weight: 8 lbs

FAQ

What does a lighting contactor do? It is a switch that turns large lighting circuits on and off, often automatically through a timer or sensor.

Does this one come in a box/enclosure? No. This is the open version on a mounting plate. You install it inside your own enclosure or lighting panel.

What coil voltage is this? 120 volts. This part number is the 120V version of the 920 Series.

How do I know it is the right part? Match the full number 920310030: 3-pole, 100A, 120V coil, sub-panel mount. If yours matches, this is the one.

Is it safety rated? Yes, it is UL listed and CSA approved.