Siemens 3NP4370-0CA01 Fuse Switch Disconnector

Core Performance & Industrial Application

The Siemens 3NP4370-0CA01 is a SENTRON 3NP4 series three-pole fuse switch disconnector.

It integrates isolation function and NH2 fuse holder, provides short-circuit and overload protection for low-voltage power circuits.

When the handle is in the open position, visible isolation gap is formed to ensure safe maintenance operation.

It adopts screw terminal connection, installed on mounting plate inside power distribution cabinet.

It is widely used as main incoming switch, motor backup protection and feeder isolation in factory power systems.

It is an obsolete legacy model, mainly used for spare replacement of old low voltage distribution panels.

Technical Specifications

▶ Product type: Fuse switch disconnector

▶ Brand: Siemens

▶ Model: 3NP4370-0CA01

▶ Rated current: 400 A

▶ Poles: 3 pole

▶ Fuse size: NH2

▶ Rated voltage: 690 VAC / 440 VDC

▶ Connection: M10 screw terminal

▶ Installation: Plate mounting

▶ Operating temperature: -25℃ ~ +70℃

▶ Protection rating: IP20 (cabinet mounted)

▶ Feature: Visible isolation point, compact structure, reliable breaking performance

▶ Country of origin: Germany

▶ Compliance: CE certification

Industry Applications

Applied in factory distribution cabinets, water treatment plants and power stations for low voltage feeder protection and maintenance isolation.

Note: Confirm fuse size and rated current before ordering