"Shunt" safety caps have been specially designed for specific receptacles derived from the 87 series.
“Shunt” safety caps for specific receptacles derived from the 87 series are made from red thermoplastic resin.
These caps incorporate:
- 4 “shunt” contacts
- fool proofing via a key.
- Insulator: Red thermoplastic resin
- Contacts: Gold plated brass
- Mechanical resistance: by distortion of the insulator
- Cost/technology optimisation
- Good reliability in severe mechanical and climatic environments
- Good electrical continuity (safety).