BS-0861 - Part 2 - 1966; Specification for Air-Break Switches and Isolators Part 2 Switches and Isolators for Voltages not exeeding 660 volts and currents up to 800 amperes a.c.
BS-0861 - Part 2 - 1966; Specification for Air-Break Switches and Isolators Part 2 Switches and Isolators for Voltages not exeeding 660 volts and currents up to 800 amperes a.c.
- London BSI 1966
- 31p
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