TPN House Service Cutout

• Upto 60/80A 22.23 mm dia.-57 mm long II a 80/100A 30.16 mm dia.-57 mm long II b
• Fuse Carriers.
• These are of split design, therefore it only necessitates to loosen the fuse clips when replacing a fuse link. Fuse link can be withdrawn from the open end of the carrier half. Carrier housing is common for both 60A & 100A fuse links. Upgrading of cutout can be done simply by replacing with larger fuse clips.

Sealing:

• The fuse carrier and fuse base unit have provision for wire sealing. An additional wire sealing arrangement is provided for the neutral.

Phase Protection:

• A hinge type nylon shroud covers the incoming phase terminals thus reducing the possibility of accidental contact with live parts when wiring the outgoing terminal.

Interlocking:

• Prior to removal of any component, the fuse carrier has to be withdrawn. This enables clear access to the neutral block and/or cable trough. This is an inbuilt safety feature.

• The design and construction of the cutouts ensures terminals to be retained without the use of any fixing screws.
• Adequate size serrated bores and pinching screws are provided for standard Copper or Aluminum and solid conductors of upto 35 sq. mm. on phase and neutral. The neutral/earth block of the cutout also has bores for two earth conductors and connection for a time switch wire. Cabling: The cable trough is designed for termination, suitable for PVC cables. In addition a small knockout is provided for an externally connected earth wire when using a PILCA cable.

• The cutout has been tested for the following Type Tests as per BS 7657:
• Test for temperature rise at rated current.
• Mechanical endurance (including repeat of test for temperature rise at rated current).
• Overload test (including repeat of test for temperature rise at rated current, lightning impulse withstand voltage dry tests and power frequency withstand voltage dry tests).
• Performance under short-circuit conditions and Terminal torque test.
• Flammability test, Impact test, strength of sealing lugs.
• Degree of protection test (Ip4x).

• H.V. Test at 3.75 kV (rams) for one minute.
• Insulation resistance test.
• Mechanical insertion & withdrawal test.

Technical specifications