SJK3 Cellpack Straight Resin Joint Kit 25-50mm cable. Voltage Level: 1.2 kV Application: Universally suitable to connect low voltage plastic-insulated cables or connectors insulated with PVC, PE, VPE, and EPR. Suitable for both copper and aluminium conductors. Application Ranges: Indoor, outdoor, underground, water (e .g submersible pumps), cable trays