Siemens Sentron, Fuse switch disconnector, 3-pole, 160A Part number 3NP1123-1CA20

Product Overview

The Siemens 3NP1123-1CA20 is a SENTRON 3NP1 fuse switch disconnector designed for safe isolation and protection of low-voltage power distribution circuits. It combines a three-pole switching mechanism with support for NH000 fuses, allowing reliable disconnection and coordinated protection of circuits up to 160 A. With a robust construction, box terminal connections, and a standardized 45 mm cover level, this device is well suited for industrial and commercial switchboard applications.

Key Features

• SENTRON 3NP1 fuse switch disconnector for low-voltage distribution systems
• Three-pole design for complete isolation of three-phase circuits
• Rated operational current: 160 A
• Compatible with NH000 fuse links
• Designed for mounting plate installation
• Box terminals for secure conductor connection
• 45 mm cover level suitable for standard panel layouts
• Robust mechanical design for industrial use

Technical Specifications

• Article Number: 3NP1123-1CA20
• Product Family: SENTRON 3NP1 Fuse Switch Disconnectors
• Number of Poles: 3
• Rated Operational Current: 160 A
• Fuse Size: NH000
• Rated Operational Voltage: up to 690 V AC
• Rated Insulation Voltage: 690 V
• Mounting: Assembly on mounting plate
• Connection Type: Box terminals
• Cover Level: 45 mm
• Mechanical Endurance: Approx. 2,000 switching cycles
• Ambient Operating Temperature: −25 °C to +55 °C

Compliance & Standards

• Designed according to Siemens SENTRON low-voltage distribution standards
• Meets applicable requirements for fuse switch disconnectors
• Suitable for industrial and commercial power distribution systems

Applications

The Siemens 3NP1123-1CA20 fuse switch disconnector is used for isolating and protecting feeder and distribution circuits in switchboards, motor control centres, and power distribution panels. When fitted with NH000 fuse links, it provides coordinated protection against overloads and short circuits while enabling safe manual isolation for maintenance and operational safety.