3NP1133-1CA20

Siemens' 3NP1133-1CA20 is designed as a robust fuse switch disconnector within the SENTRON line. This 3-pole unit is built to be mounted on a plate, facilitating effective installation in diverse settings. It is compatible with NH000 and NH00 fuse types, and it handles currents up to 160 A. The voltage capability reaches 690 V AC or 440 V DC, ensuring versatility in various applications. Moreover, the device is designed to withstand impulse voltages up to 8 kV.

A notable feature of this unit is its short-circuit withstand capacity, which can endure up to 120 kA, depending on the voltage applied. Each pole is rated for thermal dissipation at 5 W, excluding the fuse, making it efficient for thermal management. The enclosure offers different protection ratings, being IP40 with the cover, IP30 without it, and IP20 in an open arrangement, accommodating various operational environments.

Operating within a wide temperature range of -25°C to 55°C allows flexibility for installation in diverse conditions. The mechanical endurance guarantees approximately 2,000 switching cycles, indicating reliability during repetitive engagements. Primary circuit connections utilize box terminals, suitable for conductor sizes ranging from 6 mm² to 70 mm², whether solid or stranded. Installation requires a torque of 10 N·m to ensure secure connections, contributing to the overall safety and effectiveness of this device.