The ZB4BZ104 is a complete body and contact assembly from the Harmony XB4 range, designed for use with 22mm push button operators. It provides slow-break switching with two normally closed (NC) contacts composed of a silver alloy (Ag/Ni). The assembly supports screw clamp terminal connections and has a rated insulation voltage of 600V and a conventional free air thermal current of 10A. With a high mechanical durability of 5 million cycles and a wide operating temperature range, this contact block is ideal for reliable switching in demanding industrial control applications.