Industrial 674D158 Pressure Switch Double Snap

CCS 674D158 Dual-Snap Differential Pressure Switch is a DPDT industrial switch that triggers two independent circuits at a 100 psi differential setpoint, making it ideal for monitoring pressure differences in process lines and HVAC systems. Built on CCS's Dual-Snap Belleville disc spring technology, it provides repeatable, high-cycle switching in non-hazardous environments and features a rugged, weatherproof enclosure rated for NEMA 4, 13 and IP66. Electrical ratings cover up to 15 A with 125/250 VAC operation and listings also show 480 VAC capability, enabling compatibility with a wide range of control circuits and power supplies. The device is designed for harsh plant environments with a broad operating temperature range (-40°F to 186°F / -40°C to 86°C) and a differential range that supports reliable setpoint performance; the port options vary by variant, with aluminum pressure ports commonly used in CCS Dual-Snap models. Typical applications include HVAC air and fluid handling, water treatment, and other industrial processes requiring differential pressure monitoring and automatic switching of two loads.