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1SAM401904R1001

The ABB SK4‑11 (1SAM401904R1001) is an auxiliary signal/contact block designed for use with manual motor starters and other ABB control devices. It provides auxiliary switching and signaling functions using a combination of normally open and normally closed contacts. This compact unit enhances control and status feedback capability in motor control and electrical distribution systems, supporting reliable indication and logic integration in industrial and commercial electrical panels.

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Technical Specifications Parameter Specification Part Number / Model 1SAM401904R1001 ABB Type / Code SK4‑11 Signal Contact Product Type Auxiliary signal contact block Contact Configuration 1 NO + 1 NC Rated Operational Voltage Up to 690 V AC Rated Insulation Voltage (Ui) 690 V Rated Current – AC‑15 ~6 A @ 24 V AC / ~4 A @ 230 V AC / ~3 A @ 400 V AC Rated Current – DC‑13 ~1 A @ 24 V DC / ~0.5 A @ 110 V DC / ~0.25 A @ 220 V DC Conventional Free‑Air Thermal Current (Ith) 10 A Degree of Protection IP20 Connecting Capacity Flexible/ferrule: 0.5–2.5 mm²; Rigid: 0.5–2.5 mm² Tightening Torque 0.8–1.2 N·m Wire Stripping Length 10 mm Mounting Style Side‑mount auxiliary contact block for manual starters Ambient Temperature (Operation) –25 °C … +70 °C Standards Compliance IEC/EN 60947‑1, IEC/EN 60947‑4‑1, IEC/EN 60947‑5‑1; UL 508; CSA 22.2 No. 14 Weight (Approx.) 0.093 kg Dimensions 18 mm (W) × 89 mm (H) × 69 mm (D)