Surge Protection, Type 2, TN-S, Malmbergs 5271703

Description

Intermediate protection for mounting at the incoming switchboard for protection against overvoltages caused by lightning strikes or other disturbances. The surge protectors are varistor type. Supplied complete in 3- or 4-pole design for direct connection. Installed parallel to incoming line. Triggered protection by visual indication. Supplied with changing alarm relay.

Specifications

• Connection : PZ2
• Connection area : 4-35 mm²
• Width: 72 mm
• Operating temperature: -40°C - +80°C
• Alarm relay : Yes
• Dissipative capacity : 20kA, 8/20μs
• Max. breaking capacity : 40kA, 8/20μs
• Max. insurance : 125A gL/gG
• Max. continuous operating voltage: 275V
• Rated voltage: 230V
• Number of poles: 4
• Reaction time : <25ns
• Residual voltage : <1.3 kV
• Ground system : TN-S
• Test class : 2 (EN 61643-11)
• Tightening torque: 3.5Nm