Series 31 Instrument & Control info - Data Sheet

Features: Double sided, Double-Wiping, Knife-Type Rotary Contacts. Silver Contact Surfaces for Long, Reliable Life. Terminal Screws - Easy Installation. Four-Hole Mount. Control Switch Special Features: Spring Return to Normal (Vertical) Position. Instrument Switch Special Features: Make-Before-Break (Shorting Contacts). Common Input Tap Switch Arrangement. Sequentially Connected to Several Lines Using the Same Switching Deck. Positive Positioning, Maintained Action Detent Mechanism