The LC1F2600GD is a 3-pole TeSys F contactor rated 2600 A in AC-1 utilisation category — that's resistive loads like heaters or large lighting banks, not motor starting. The AC-1 rating is the headline number; for motor duty (AC-3) you'd need a different frame. The 125 VDC coil holds between 0.85 and 1.1 Uc at 55 °C and drops out between 0.2 and 0.35 Uc, so verify your control supply stays within that band. Closing takes 60 to 70 ms, opening 40 to 50 ms — fast enough for most resistive switching but not for arc-sensitive loads that need zero-crossing. Rated breaking capacity is 3900 A per IEC 60947-4-1, and short-time withstand (Icw) is 12 kA for 10 s at 40 °C — that tells you the contactor can ride through a fault long enough for an upstream breaker to clear. The associated fuse recommendation is 2500 A gG at ≤ 440 V. Rated insulation voltage is 1000 V, impulse withstand 8 kV, overvoltage category III. That puts it in the heavy industrial panel class.
Mounts on a plate — not DIN rail. Dimensions are 519 mm wide, 382 mm high, 251 mm deep. That's a large footprint; plan the panel layout accordingly. Power circuit connections use bars with a busbar cross-section of 100 x 10 mm, three cables. Control circuit uses screw clamp terminals accepting 1 to 4 mm² flexible or solid. Tightening torque is 58 N.m on the power circuit, 1.2 N.m on the control circuit. IP20 front face with shrouds per IEC 60529 and VDE 0106. Heat dissipation is 40 W total, with 250 W per pole in AC-1 duty. That's significant — ensure adequate ventilation or forced cooling in the enclosure. Altitude rating is 3000 m without derating. Maximum operating rate is 600 cycles per hour at 55 °C.
Complies with IEC 60947-4-1, IEC 60947-1, EN 60947-4-1, EN 60947-1, JIS C8201-4-1, UL 60947-4-1, and CSA C22.2 No 60947-4-1. Protective treatment is TH (tropicalised). The contactor is rated for resistive load application per its AC-1 utilisation category.