OS800D12-3 SWITCH FUSE

The OS800D12-3 is a robust switch-disconnector fuse specifically developed to meet the demanding requirements of power distribution and industrial applications. Rated for up to 800 A with a conventional free-air thermal current (Ith) at 40°C, it supports operational voltages of up to 690 V AC and offers an insulation voltage (Ui) of 1000 V. This device features a three-pole configuration, base mounting design, and front-operated mode for streamlined integration in various panels or systems.

 

Engineered in accordance with IEC 60947-3 standards, the OS800D12-3 delivers exceptional safety and reliability under demanding conditions. It accommodates NH2 and NH3 DIN-standard fuse sizes, providing versatility across multiple protection setups. The rated operational power spans from 250 kW at 240 V to 710 kW at 690 V under AC-23A duty cycles, making it ideal for high-performance environments.

 

The disconnect switch achieves short-circuit current ratings of up to 100 kA at 500 V and incorporates lug terminals designed for secure connections within tightening torque ranges between 50–75 N·m. Despite its significant capabilities, the unit's compact form factor ensures compliance with IP20 protection levels for safe handling during installation or operation.

 

Delivered without handle shafts or mounting accessories — allowing flexibility in customization — this product provides superior performance where uninterrupted operations are critical. Product weight stands at approximately 13.63 kg, while advanced certifications such as DNV GL confirm quality assurance tailored to both general industry usage and marine classification systems.

 

Optimal for energy-intensive sectors like oil & gas or automation infrastructure projects requiring low-voltage distribution fusing solutions engineered with precision functionality.