B-Line A202K1GA Magnetically Latched Lighting Contactor

The B-Line A202K1GA is magnetically latched, meaning the contacts hold their position after a momentary coil pulse instead of requiring the coil to stay energized. That keeps coil heat and hum out of the panel and holds the lighting load state through a control power interruption. A continuously energized contactor, by contrast, drops out any time control power is lost, which turns the lights off with it. If you want the lights to stay as set through a control blip, latched is the type you want.

Eight poles rated 30A each, so it will switch up to eight separate lighting circuits from one enclosure. That suits a panel feeding multiple branch lighting circuits off a single time clock or photocell contact. If you only need two or four circuits, size down rather than paying for poles you will not land conductors on.

The coil is 120V, 60 Hz. Your time clock, photocell, low-voltage relay or BAS output has to deliver a 120V AC momentary signal to latch and unlatch it. If your control wiring is 24V or 277V, this is the wrong coil and you need the matching voltage version of the A202 Series.

A magnetically latched contactor wants momentary pulses, not a maintained closure. Feed it from a time clock or controller with momentary latch and unlatch outputs, or add a pulse/interposing arrangement. Wiring a maintained 120V contact straight to the latch coil is a common mistake with the A202K1GA and leaves the coil energized when it should not be.

Each of the eight poles on the A202K1GA carries 30A, which covers a typical 20A lighting branch circuit with margin. Lighting loads are the concern rather than the number itself: ballast and driver inrush is what stresses contacts, so keep each circuit within its breaker rating and do not gang several circuits onto one pole to get around the 30A figure.

A202K1GA is the catalog number. It is the A202 Series eight-pole, 30A, magnetically latched contactor with a 120V 60 Hz coil. Quote that number exactly, since the A202 family changes pole count and coil voltage within the same series designation.

Eaton publishes a spec sheet for the A202K1GA, and it is linked directly from the product information. That document carries the detailed electrical and enclosure data an engineer needs to match the contactor to a drawing.