Finder 7P.21.8.275.1020 Surge arrester 20 kA Switchboard protection

The Finder surge arrester, model 7P.21.8.275.1020, offers surge protection specifically designed for switchboards with a capacity of 20 kA. It provides overvoltage and overcurrent protection, making it ideal for safeguarding electrical systems against lightning strikes and power surges. Typical applications include protecting infrastructure in commercial or industrial settings.

Type	Surge arrester
Voltage Rating	230V AC
Category type 2	true
Construction size	1 modular spacing
Current Ratng	16A
Degree of protection (IP)	IP20
Dim	(L x W x H) 89.8 x 17.5 x 56.9 mm
Height	56.9mm
Integrated backup fuse	false
Integrated short-circuit protection	N/A
Integrated short-circuit protection selective to fuse gG	N/A
IP Rating	IP20
Leakage Current	20kA
Leakage-current free	N/A
Length	89.8mm
Max. conductor cross section flexible (fine-strand)	N/A
Max. conductor cross section solid (solid, stranded)	N/A
Max. continuous voltage AC	275V
Max. continuous voltage DC	N/A
Max. discharge surge current (8/20)	40kA
Max. overcurrent protection device, parallel connection (fuse)	160A
Max. overcurrent protection device, series connection (fuse)	N/A
Max. PV-voltage	N/A
Misc Attribute	Type 2:
Mounting method	DIN rail (top hat rail) 35mm
Nominal discharge surge current (8/20)	20kA
Nominal voltage AC	230V
Nominal voltage DC	N/A
Number of conductors (without earthing)	1
Operating Temperature	-40 to +80°C
Short-circuit breaking capacity (Isccr)	50kA
Signalling at the device	Optical
Surge protection for	Switchboards
System configuration DC	false
System configuration IT	false
System configuration other	false
System configuration TN	true
System configuration TN-C	true
System configuration TN-C-S	true
System configuration TN-S	true
System configuration TT	false
Voltage protection level	N/A
Voltage protection level L-N	1.35kV
Voltage protection level N-PE	1.35kV
Width	17.5mm
With remote signalling contact	true