The ZB4BZ1029 is a complete body and contact assembly designed for use with Harmony XB4 series control and signaling units. It provides a single, slow-break, normally closed (1NC) contact configuration with silver alloy contacts and screw clamp terminals. The assembly has a conventional free air thermal current rating of 10 A, a rated insulation voltage of 250 V, and offers high mechanical durability of 5,000,000 cycles. With an operating temperature range of -25°C to 70°C and high resistance to vibration and shock, this IP20-rated component ensures reliable performance in various industrial environments.