Earthing fixed points
Earthing fixed points are critical safety components in electrical installations that ensure a reliable connection to the earthing system. They are used for personal protection and system safety by preventing dangerous contact voltages in the event of a fault and safely conducting leakage currents to earth.
Key properties of fixed earthing points:
- Permanently low-resistance connection to the earthing system
- High mechanical stability to absorb tensile forces
- Corrosion resistance even when installed outdoors
- Standard-compliant marking with the earthing symbol
Technical requirements:
- Sufficient cross-section for expected residual currents
- Vibration-proof design of the connecting elements
- Protection against unintentional loosening
- Resistance to electrochemical corrosion
Earth connection bolt for earth connection socket
- Material: brass, tin-plated
- With steel grub screw
| Mounting in switchgear [mm] |
Rated value Ir [kA]/tr = 1 s | Item no. |
|---|---|---|
| M12 x 25 | 18,7 | 63-0201-007 |
| M12 x 40 | 18,7 | 63-0201-006 |
- With internal thread
| Mounting in switchgear [mm] | Rated value Ir [kA]/tr = 1 s | Item no. |
|---|---|---|
| M12 | 18,7 | 63-0201-003 |
Weld-on stud for connection adapter with captive wing nut or with hole
- 13 mm
- Material: galvanized steel
| Mounting in switchgear [mm] | Rated value Ir [kA]/tr = 1 s | Item no. |
|---|---|---|
| M12 x 30 | 18,7 | 63-0204-001 |
Earthing screw for connection adapter with captive wing nut
- Material: brass, tin-plated
| Mounting for EKV [mm] | Width across flats | Rated value Ir [kA]/tr = 1 s | Item no. |
|---|---|---|---|
| M12 x 60 | 32 | 13,8 | 63-0205-001 |
| M16 x 70 | 32 | 18,7 | 63-0205-002 |
Transition earthing screw for connection adapter with captive wing nut
- Material: brass, tin-plated
| Thread | Width across flats | Rated value Ir [kA]/tr = 1 s | Item no. |
|---|---|---|---|
| M12 to M16 | 32 | 18,7 | 63-0205-003 |
Earthing nut for connection adapter with captive wing screw
- Material: brass, tin-plated
| Internal thread | Bolt thread [mm] | Width across flats | Rated value Ir [kA]/tr = 1 s | Item no. |
|---|---|---|---|---|
| M12 | M12 x 25 | 32 | 9,9 | 63-0206-001 |
| M12 | M16 x 30 | 32 | 9,9 | 63-0206-003 |
| M16 | M12 x 25 | 32 | 9,9 | 63-0206-002 |
Further accessories for earthing and short-circuiting devices
Phase fixed points
Earth potential connections
