Schaffner EMV AG
Installation guidelines FN 3025/FN 3026
2 of 2
2004-176C
3. Recommendations for the mechanical installation of FN 3025
10A types
20A types
30A types
50A types
Screw
M4 (hex cap)
M4 (hex cap)
M4 (hex cap)
M5 (hex cap)
Washer
M4 (flat- & spring-
washer)
M4 (flat- & spring-
washer)
M 4 (flat- & spring-
washer)
M5 (flat- & spring-
washer)
Tool
¼ inch nut
wrench size 7mm
¼ inch nut
wrench size 7mm
¼ inch nut
wrench size 7mm
¼ inch nut
wrench size 8mm
Torque
According to the property class of the screws and material grade of the mounting
area.
4. Recommendations for the electrical connection of FN 3025/FN 3026
10A types
20A types
30A types
50A types
Flex wire
1.3 - 2.5mm
2
4 - 6mm
2
8 - 10mm
2
16 - 20mm
2
AWG type wire
AWG 16 -
AWG 13
AWG 12 -
AWG 10
AWG 8 - AWG 7
AWG 5 - AWG 4
Screw
(included)
M4 M4 M4 M5
Ring/fork lug
(W/d)*
max. 11mm
(9.5mm)/
min. Ø4.3mm**
max. 11mm
(9.5mm)/
min. Ø4.3mm**
max. 11mm
(9.5mm)/
min. Ø4.3mm**
max. 16.5mm
(15mm)/
min. Ø5.3mm**
Lug thickness:
– One lug used:
– Two lugs used:
1.0mm
0.8mm
1.0mm
0.8mm
1.0mm
0.8mm
1.5mm
1.0mm
Tool Cross
recessed
wrench #2
Cross recessed
wrench #2
Cross recessed
wrench #2
Cross recessed
wrench #2
Torque
1.0 - 1.2Nm
1.0 - 1.2Nm
1.0 - 1.2Nm
1.9 - 2.2Nm
* Schaffner recommends the use of insulated and UL-recognized ring lugs or fork lugs of the
appropriate size.
** Specification in () relates to earth connector.
Indicated wire sizes are for field wiring; wire size may be reduced for chassis/cabinet wiring, especially
when fixing two wires in one terminal (respect your local cabinet installation standards).
The installation guidelines above need to be obeyed to ensure the expected filter function. All relevant
electrical and mechanical data can be found in the FN 3025/FN 3026 datasheet or the installation
guidelines. For further information please contact your local Schaffner partner.
www.schaffner.com
April 2007
