ON300 Surge Protector T1+T2 B+C 4P 4M 8/50KA TT, TNC, TNS
The ON 300 surge protectors protect against the effects of surges in power supply networks.
Application
Surges caused by atmospheric discharges account for 25 to 40% of all damage to electrical devices. The use of surge protectors can prevent up to 60% of electrical equipment damage.
Technical Data
- Protection against surge effects in power supply networks 230/400 V~, 50/60 Hz
- Compliance with IEC/EN 61643-11 standards
- Type 1+2 (formerly class B+C)
- Iimp = 8 kA/phase (impulse 10/350 µs)
- Imax = 50 kA/phase (impulse 8/20 µs)
- Maximum voltage (Uc): 320 V~
- Protection level (Up): 1.3 kV
- For networks: TT, TNC, TNS
- Technology used: Varistor
- Design: 4P
- Recommended overcurrent protection: S 300 TX³/DX³ C 40A
- Width in modules 17.5 mm2: 4
- With replaceable cartridges with status indicator:
- green indicator: cartridge functional
- orange indicator: cartridge to be replaced






