Shunt release symbol circuit breaker

A very specific question!

The symbol you're referring to is likely the "shunt release" or "shunt trip" symbol, which is used to represent a circuit breaker or fuse that is designed to trip or open in the event of an overcurrent or short circuit.

Here's what the symbol looks like:

⏸

This symbol is often used in electrical diagrams and schematics to indicate a circuit breaker or fuse that is designed to interrupt the circuit in the event of an overcurrent or short circuit. The ⏸ symbol is also sometimes referred to as a "shunt trip" symbol, as it indicates that the circuit breaker or fuse is designed to trip or open in a shunt-like manner, rather than relying on a thermal or magnetic trip mechanism.

In a circuit breaker or fuse, the shunt release mechanism is typically designed to detect an overcurrent or short circuit and then rapidly open the circuit to prevent further damage or electrical shock. The ⏸ symbol is used to indicate this type of circuit breaker or fuse in electrical diagrams and schematics.