General
Number of conductors (without earthing)	4
Nominal discharge surge current (8/20)	20
Nominal voltage AC	230
Short-circuit breaking capacity (Isccr)	100
Max. continuous voltage AC	275
Max. discharge surge current (8/20)	20
Mounting method	Other
Construction size	4 modular spacing
Voltage protection level	2.8
Max. conductor cross section solid (solid, stranded)	35
Max. conductor cross section flexible (fine-strand)	25
Voltage protection level L-N	2.8
Voltage protection level N-PE	1.4
Signalling at the device	Optic
Degree of protection (IP)	IP20
System configuration DC
System configuration IT
System configuration TN
System configuration TN-C
System configuration TN-C-S
System configuration TN-S
System configuration TT
System configuration other
With remote signalling contact
Integrated backup fuse
Category type 2

SPD Type 2 surge protection devices with QuickSafe® thermal monitoring are designed to protect against indirect lightning strikes and switching surges. They are installed as close as possible to the feed point of the electrical system. All OVR T2s consist of a base part and a replaceable protection module. They are equipped with a mechanical function display and the TS variants with a potential-free changeover contact. The variants with 'reserve varistor' (s) offer additional protection for the electrical system in that the surge protection device is not completely disconnected from the mains at the end of its service life, but an additional varistor guarantees basic protection and the system is therefore still protected until the surge protection module is replaced. They are compatible with the System pro M compact series and can be connected to them via phase rails. Mainly used in sub-distribution boards and final circuits.