It provides Class 10 thermal protection with a 23-32 A adjustment range and phase-failure sensitivity (trips at 130% of Ir on two phases with the third at zero). The relay mounts directly under a contactor or on a plate/DIN rail with specific accessories, and its IP20 finger-safe enclosure suits panel-mount environments.
The 23-32 A thermal adjustment range sets the motor full-load current window — you set the dial to match the motor nameplate FLA. The 1 NO + 1 NC auxiliary contact composition provides a normally-open run signal and a normally-closed trip signal to the PLC or safety circuit. The signalling circuit is rated 0.95 A at 240 V AC-15 and 0.06 A at 250 V DC-13 — enough for a contactor coil or PLC input, but not for heavy inductive loads.
The DPER332 carries EN/IEC 60947-4-1 (motor starters), EN/IEC 60947-5-1 (control circuit devices), UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, and EN 50495 (safety devices for explosive atmospheres). The power circuit insulation is rated 600 V per UL and 690 V per IEC. Dielectric strength tested at 1.89 kV 50 Hz. Flame retardance V1 per UL 94. These approvals cover North American and European installations, including ATEX-related safety circuits.