It carries a 100 V DC coil with a built-in bidirectional peak limiting diode suppressor, and is rated for AC-1 utilisation category at 20 A.
The AC-1 rating at 20 A defines the continuous resistive load it can switch — this is the figure that governs the BOM line for a resistive heating or lighting bank. The rated insulation voltage of 690 V (IEC 60947-4-1) and 600 V (UL 508 / CSA C22.2 No 14) means it can be specified into 480 V and 600 V panels without derating for voltage. The coil operates across 0.8...1.15 Uc (80...115 V DC) and drops out between 0.1...0.75 Uc (10...75 V DC), giving a clean pick-up and drop-out window for control logic. Mechanical durability is 5 million cycles; electrical durability is 300,000 cycles at 20 A AC-1 under 440 V. For a changeover contactor in a reversing or transfer application, the mechanical figure is the one that drives long-term replacement intervals — the electrical endurance is load-dependent and will be lower under motor loads.
Mounts on plate or rail (DIN). Screw clamp terminals accept 1.5...4 mm² solid or 0.75...4 mm² flexible without ferrule, and 0.34...2.5 mm² with ferrule. Tightening torque is 1.3 N.m with a No. 2 Philips or 6 mm flat screwdriver.
Designed to VDE 0660, IEC 60947, BS 5424, and NF C 63-110. Rated breaking capacity is 110 A at 440 V, 80 A at 500 V, and 70 A at 660...690 V per IEC 60947. The associated fuse rating is 25 A gG or 25 A aM for the power circuit. Flame retardance is V1 per UL 94, and it meets NF F 16-101/102 requirements.