Bryant 4921 SPDT Momentary-Contact AC Switch

Bryant 4921 SPDT Momentary-Contact AC Switch, 20A

The Bryant 4921 is a single-pole double-throw (SPDT) momentary-contact AC switch rated 20A, designed to deliver on-demand circuit control that automatically returns to its normal position once released. Because the switch is momentary rather than maintained, it actuates only while it is physically engaged, making it well suited for control functions where a brief, repeatable signal is preferred over a continuous on/off state. Built for use in AC electrical systems, the Bryant 4921 provides dependable momentary switching action for control circuits, equipment signaling, and general-purpose electrical control tasks. Its 20A amperage rating supports demanding electrical control applications where consistent, repeatable switching performance is required from a compact, purpose-built switching device.

Key Features

• SPDT Switch Configuration: The single-pole double-throw (SPDT) design allows the Bryant 4921 to direct current between two separate circuit paths from a single input, giving installers flexibility when wiring control and signaling circuits that require switching between two states.
• Momentary Contact Action: Momentary-contact operation means the switch actuates only while it is engaged and automatically returns to its normal, resting state once released, which makes it a practical choice for pushbutton-style control functions and equipment that needs a brief triggering signal.
• AC Switch Rating: The Bryant 4921 is engineered specifically for AC circuit applications, providing dependable, repeatable performance in control, signaling, and general electrical switching circuits found in commercial and industrial settings.
• 20A Amperage Rating: Rated at 20A, the switch is built to handle the electrical control loads typical of commercial and industrial control circuits, supporting consistent switching performance over repeated cycles.
• Compact Control Device: As a dedicated momentary switch, the Bryant 4921 is designed to integrate into control panels, pushbutton stations, and switching assemblies where a reliable SPDT momentary function is required.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Momentary Control Circuits and Pushbutton Stations, where a brief triggering signal is required to initiate an operation.
• Motor Control and Equipment Signaling, providing a reliable momentary input to start, stop, or signal connected equipment.
• Industrial and Commercial Control Panels, where SPDT momentary switching is used to route control signals between circuits.
• General AC Circuit Switching Applications, supporting a wide range of 20A-rated control and switching tasks.
• Panelboard and Control Enclosure Wiring, integrating into control assemblies that rely on momentary-contact switching.

Why Bryant?

Bryant electrical products are engineered to deliver dependable performance for professional electrical control applications. The 4921 SPDT momentary-contact switch is built to provide consistent, repeatable switching action at its rated 20A capacity, supporting reliable control circuit performance across commercial and industrial environments. Choose Bryant for electrical components engineered to perform reliably in demanding control and switching applications where consistent momentary actuation is essential.