Overview
The CRL 279-1212 rotary switch is a vintage single-pole multi-position mechanical switch manufactured by Centralab (CRL). This unit features the classic rotary selector design common in industrial control systems, audio equipment, and test instrumentation from the mid-20th century forward. The CRL 279-1212 delivers reliable detent-indexed switching suitable for applications requiring multiple stable positions and consistent mechanical operation.
Key Features
- Single-pole, multi-position rotary configuration for versatile selector applications
- Detent mechanism ensures stable positioning and audible click feedback
- Vintage Centralab construction known for durability and long service life
- Ceramic insulation and silver-plated contacts for dependable electrical performance
- Compatible with legacy industrial control systems and vintage equipment restoration
Technical Specifications
- Manufacturer: CRL (Centralab)
- Part Number: 279-1212
- Configuration: 1-Pole Multi-Position
- Insulation Type: Ceramic
- Contact Material: Silver-plated
- Switching Type: Non-shorting (BBM break-before-make)
- Index Angle: 30 degrees per position
- Condition: Used, fully functional
Typical Applications
- Equipment restoration and vintage instrument repair
- Legacy industrial control and automation systems
- Audio amplifier input selector circuits
- Test and measurement equipment selector switches
- Vintage appliance and machinery retrofit and repair
Compatibility & Replacements
Compatible With
- Vintage industrial control panels and assemblies
- Legacy electrical equipment manufactured 1950s–1990s
- Modular rotary switch arrays and multi-deck assemblies
- Equipment requiring mechanical, non-electronic selector logic
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. While Centralab rotary switches share similar mechanical mounting (1¼″ center holes) and wafer-section dimensions across their product line, exact interchangeability depends on the specific electrical configuration and mounting requirements of your equipment. Original documentation or part cross-reference should be consulted for confirmation.
Works With
- Multi-deck rotary switch assemblies (standard shaft configurations)
- Vintage equipment control circuits requiring manual selector operation
- Mechanical index and detent systems common to CRL/Centralab products
- Applications where electrical contact switching, not electronic control, is required
