Description
Hand operated rotary switches are cost-effective solutions for complex contact switching functions, providing safe disconnection from the supply. They are categorized into Ammeter and Voltmeter switches, with specific requirements for current transformer (C/T) connections to prevent high voltage generation.

Specifications
The switches are available in four ranges: R6, R16, Minirotary, and R40, with thermal ratings from 6A to 40A and rated voltage of 690V. They offer various position indexing options and include standard operating knobs. The switches have different switching characteristics for AC20A, AC21A, AC22A, and AC23A, with rated short time withstand and maximum backup fuse specifications.

Switch Characteristics
- R6 & R16: Common frame, suitable for isolation and metering selectors.
- Minirotary: Versatile, suitable for rail applications due to shock and vibration resistance.
- R40: High versatility with 300 & 600 indexing, ideal for isolation duties.

Catalogued Items
Various sequences for Ammeter and Voltmeter switches are provided, with specific catalog numbers for different configurations and ratings. These include options for metering current in each phase, leakage, out of balance current, and voltage metering between phases and neutral.

Knob Actuators
Different knob actuators are available, including single hole fixing options with IP65 rating. These include moulded and die-cast options, with specific catalog references for each type.

Additional Features
Extended shafts, gold surfaced contacts, IP65 sealing kits, base mounting options, and additional terminal protection are available to enhance the standard switches.

Conclusion
The Craig & Derricott Classic Range offers a wide selection of rotary switches with bespoke arrangements available for specific needs. Additional components such as enclosures and indicator plates are available in separate data sheets.