PROTEC C , Low-voltage network systems
Overvoltage arrester class C, Model 660010

PROTEC C is an overvoltage arrester for connection in subdistribution boxes.
In case of overvoltage a thermal protection is activated which warns against
permanent damage.
Consequently only the varistor overvoltage insert has to be replaced.

The basic casing remains on the top hat fixing rail.
- simple fault display
- mental spring; easier, quicker and more reliable mounting of arrester base onto top hat fixing rail
- connection to 35mm2 (single-wire system)
- compatability with automatic fuses of most large European manufactures. ABB, Siemens, Schrack...), joining with busbars
- patented module extraction method from base
- higher capacity varistor (higher discharge currents, lower residual voltages, quicker respons time)
- numerous different combinations of overvoltage protection components in the module

Type PROTEC C and PROTEC CR
40/275
Certificated under IEC 616493-1
ÖVE SN 60, PART 1 AND 4
Arrester group C
Max. permitted operating voltage (AC/DC) U c 275/350 V
Normal discharge current (8/20) In 15 kA
Max. discharge current (8/20) Imax 30 kA (1x40 kA)
Degree of protection at 5 kA <1 kV
at in <1.5 kV
Response time tA < 25 ns
Back-up fuse (if mains ts >100A) 100 AgL
Short circuit capability to 25 kA/50 Hz
Temperature range -20°C...+80°C
Cross-section of connection wire single-strand 35 mm2; multi-strand 25 mm2
Mounting Indoors on top hat fixing rail 35 mm
Degree of protection IP 20
Casing material thermoplastic; extinguishing degree V - 0
Dimensions DIN 43880 1 TE
Additional data for PROTEC CR
Remote signalisation (R) AC 250V / 0.5A
- leading 125V / 3A
- cross-section of connection wire max. 1.5mm2
Installation of PROTEC C Installation conditions
S1
S2 separate Si fuse in arrester line S3
<25 mm2

as S1
only if back-up fuse is in
the network > 100 AgL

6 - 25 mm2