Square D S33659 Circuit Breaker Shunt Trip 24-30V

Product Description

The SQUARE D S33659 is a shunt trip accessory designed for use with PowerPact circuit breakers. A shunt trip allows remote or automated disconnection of a circuit breaker by applying a control voltage signal to the trip coil, causing the breaker to open without manual intervention. This accessory operates on a control voltage range of 24 to 30 volts AC or DC, making it suitable for integration with building automation systems, fire alarm panels, or other low-voltage control circuits. It is installed by licensed electricians during panel work or system commissioning where remote trip capability is required by code or design.

The S33659 shunt trip is intended for installation into compatible PowerPact circuit breaker frames as an internal accessory. Typical applications include commercial and industrial electrical systems where remote disconnection, emergency shutoff, or interlock functionality is needed. This type of accessory is commonly specified in life safety systems, generator transfer panels, and automated control schemes requiring breaker-level tripping from a remote signal source.

Key Features

• Control voltage range of 24 to 30 volts AC or DC for compatibility with low-voltage control systems
• Designed for internal mounting within PowerPact circuit breaker assemblies
• Enables remote or automated breaker tripping without manual operation
• Compact form factor at 1.5 inches tall, 2.5 inches wide, and 4.3 inches in length
• Lightweight at 0.42 pounds for easy handling during installation

Compatibility

Designed for use with PowerPact circuit breakers as stated by the manufacturer. Verify the specific PowerPact breaker frame size and accessory slot availability before ordering to confirm fitment.

Installation Notes

Installation of a shunt trip accessory must be performed by a qualified, licensed electrician. Always de-energize and lock out the circuit breaker and associated panel before installing or removing internal accessories, following NFPA 70E arc flash and lockout/tagout procedures. The shunt trip coil wiring connections should be made in accordance with the applicable NEC article governing the control circuit voltage class in use. Do not apply control voltage to the shunt trip coil while the breaker panel cover is removed or while personnel are working inside the enclosure.