OS800D20 SWITCH FUSE

The OS800D20 is a two-pole switch disconnector fuse engineered for demanding applications, delivering robust performance and compliance with IEC 60947-3 standards. It supports a rated operational voltage of up to 690 V AC and boasts a conventional free-air thermal current (Ith) of 800 A at 40 °C, ensuring high electrical endurance. When fully enclosed, its conventional thermal current (Ithe) provides capability up to 720 A for safe operation in controlled environments.

 

This device utilizes the DIN fuse system accommodating NH2 and NH3 fuse sizes. Designed for base mounting, it features lug terminals requiring tightening torque between 50–75 N·m. The OS800D20 achieves an IP20 protection rating per IEC 60529 standards, offering protection against solid objects larger than 12 mm without compromising reliability.

 

Its performance characteristics include power loss per pole rated at 75 W under nominal operating conditions and conditional short-circuit current ratings: up to 100 kA at 500 V AC or up to 80 kA at its maximum operational voltage of 690 V AC. The switch disconnector supports operational power ratings across various voltages with peak outputs of up to 710 kW at higher loads (690 V).

 

Constructed with dimensions of L306 x W233 x H255 mm and weighing approximately 10.1 kg, this unit is suited for industrial applications where precision electrical control and safety are paramount. Additional certifications like CE Declaration of Conformity ensure compliance in regulated industries while environmental declarations align with EU directives including RoHS requirements for sustainability adherence.

 

Applications within energy distribution systems, critical infrastructure projects, or manufacturing sites make this product ideal due to its technical reliability alongside streamlined integration capabilities into existing systems' architectures through front-operated controls tailored toward professional engineering systems integrators or procurement stakeholders.