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SERIES 31B FOUR HOLE
DETENT-ACTION ROTARY SWITCHES
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
Electrical Specifications
Interrupt Ratings
10A/125VAC
5A/240VAC
3A/600VAC
5A/30VDC
1A/125VDC
Overload Current (50 operations): 60A/125VAC Resistive
Voltage Breakdown: 2000V rms minimum
Insulation Resistance: 100 Megohms minimum
Contacts Resistance: .01 ohms maximum
Mechanical Specifications
Sections
1 to 10
Poles
1 to 20
Positions
8; Adjustable Stops for 28 Position Rotation
Contacts
Break-Before-Make (Non-Shorting);
Make-Before-Break (Shorting)
Action
45° Positive Detent Indexing
Mounting
4-Hole
Panel Thickness
3/16" Max. Standard
Rotor Contacts
Silver Plated Phosphor-bronze, Double Grip
Stationary Contacts
Silver Plated Copper, w/Integral Screw Type Terminals
Construction
Contacts Enclosed in Molded-phenolic Disks
Approvals
UL File No. E18174
CSA File #LR20743
Variations
For Spring Return Switches please see special configurations.