Description
Hand operated rotary switches are designed for complex contact switching functions, ensuring safe disconnection from power supplies. Cumulative switches are particularly useful in control circuits and for sequentially adding loads such as heating or lighting.

Specifications
The document details models R6, R16, Minirotary, and R40, each with unique thermal ratings, position indexing options, and a standard rated voltage of 690V. Switching characteristics differ by model, with various current ratings for categories AC20A, AC21A, AC22A, and AC23A.

Switching Characteristics
Each model has specific current ratings at different voltages, with the R40 model supporting the highest ratings. The document also specifies the rated short time withstand current and maximum BS 88 backup fuse ratings.

Mechanical and Electrical Specifications
All models boast a mechanical life exceeding 0.5 million operations. Termination sizes and maximum connecting cable sizes vary by model, with contact materials including Ag/Ni, Fine Silver, and Ag/CdO.

Catalogued Items
The document lists catalogued items with specific sequences and options for different ratings and poles, including restricted and unrestricted position stayput options with detailed catalog numbers.

Accessories
Available accessories include multi-position locking handles, knob actuators, and key actuators, offering various mounting options to enhance functionality and security.

Alternative Knobs and Extended Shafts
Customization options include alternative knobs and extended shafts. Gold surfaced contacts are available for low power circuits, and IP65 sealing kits enhance standard panel mounting switches.

Additional Features
Base mounting options and faceplate padlocking devices provide added security and flexibility, with additional terminal protection options available.

Technical Data Sheet Overview
This technical data sheet for Craig & Derricott's Classic Hand Operated Rotary Switches focuses on cumulative sequences, detailing product specifications, dimensions, and additional features.

Specifications
The data sheet emphasizes the versatility of the rotary switches and the wide range of assemblies available, highlighting the company's ability to provide bespoke arrangements tailored to specific customer requirements.

Dimensions
Detailed dimensions for single hole mounted components are provided, with a continuation on the following page.

Additional Features
The data sheet notes additional features and accessories, with common components like enclosures and indicator plates applicable across multiple product ranges.

Conclusions
The conclusion underscores the company's commitment to customized solutions and encourages customers to contact their sales team for specific needs, directing readers to additional data sheets for more information on enclosures and indicator plates.