The LC1F1504GD: The 250 A rated operational current (Ie) in AC-1 category at ≤440 V defines this contactor's capacity for resistive loads — heating elements, lighting banks, or transformer primaries. For motor loads (AC-3), the rating would be lower; this unit is not specified for AC-3 duty. The 125 V DC control circuit voltage (Uc) with an operational range of 0.85...1.1 Uc at 55 °C means the coil holds reliably between about 106 V and 138 V DC, and drops out between 0.15...0.2 Uc (19–25 V DC). Mechanical durability of 10 Mcycles gives a long service life in low-cycle applications.
This contactor mounts to a plate — not a DIN rail. The power circuit uses bolted connections, bar connections (2 x 25 x 3 mm), or ring terminals up to 120 mm². Control circuit wiring accepts screw clamp terminals for 1–4 mm² flexible or solid wire (without cable end) or 1–2.5 mm² with cable end. Tightening torque: control circuit 1.2 N·m, power circuit 18 N·m. The front face with shrouds achieves IP2X per IEC 60529 and VDE 0106. Dimensions: 170 mm height, 200.5 mm width, 171 mm depth.
The contactor is certified to IEC 60947-4-1, EN 60947-4-1, IEC 60947-1, EN 60947-1, and JIS C8201-4-1. Rated insulation voltage (Ui) is 1000 V per IEC 60947-4-1 or 1500 V per VDE 0110 group C. Overvoltage category III. Protective treatment TH for tropical environments. Storage temperature range: -60 to 80 °C.