Bryant
Bryant 4901BW 20A 120/277V toggle wall switch
A 20 A single-pole toggle switch rated for 120/277 V AC with screw-terminal wiring and a 1.7 in height
- 20 A rating handles heavy-duty industrial loads
- 120/277 V AC rating suits multi-voltage installations
- Single-pole toggle delivers reliable maintained switching
- Chemical, corrosion and impact resistant body withstands harsh environments
- UL/CSA listed for verified safety compliance
Product identity
The Bryant 4901BW is a single-pole toggle wall switch rated for 20 A at 120/277 V AC. It is built for industrial and commercial lighting circuits where a maintained on-off action is required. The white finish and chemical-resistant body suit clean-room and food-processing environments.
Deciding specification
The 20 A, 120/277 V AC rating is the figure that determines whether this switch matches the circuit breaker and load. A lower-rated switch would overheat; a higher-rated one would not fit the same enclosure or wiring method. Confirm the branch-circuit amperage and voltage before selecting this model.
Installation notes
Back and side wiring with screw terminals accepts solid or stranded conductors for quick termination. The 1.7 in overall height fits standard industrial boxes, and the brass/nickel-plated steel ground terminal ensures a solid bond. Common issues include over-tightening terminal screws, which can crack the thermoplastic body, and failing to de-energise the circuit before wiring.
Highlights
- 20 A rating handles heavy-duty industrial loads
- 120/277 V AC rating suits multi-voltage installations
- Single-pole toggle delivers reliable maintained switching
- Chemical, corrosion and impact resistant body withstands harsh environments
- UL/CSA listed for verified safety compliance
Specifications
| Brand | BRYANT |
|---|
Questions about this item
What does the 20 A rating mean when the switch is installed in a circuit?
The switch is rated to carry up to 20 amperes continuously at 120 or 277 volts AC, so it can control lighting or motor loads up to that current without overheating.
How does the 120/277 V AC rating limit what the switch can control?
It is approved for single-phase circuits up to 277 volts AC, making it suitable for both standard 120 V lighting and 277 V commercial fluorescent or LED fixtures.
What wall-box depth is needed to fit the 1.7 in. tall switch body?
The switch body measures 1.7 inches high, so a standard 2-inch deep device box provides enough clearance for the toggle and wiring.
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