Specifications

SERIES 20
MINIATURE INSTRUMENT AND CONTROL SWITCHES
Features
• Space Saving Design - Two Hole Panel Mount on 3” Centers
• Spring Loaded Cam Action Contacts
• Silver Plated Copper Surfaces for Long, Reliable Life
• M4-7 Terminal Screws for Easy Installation of #16AWG Wire
• NEMA Class A (105˚C) Insulating Materials
Control Switch Special Features
• Mechanical Red/Green Target
• Slip Contacts for Alarm and Indicator Circuits
• Pull to Lock for Safety Lockout
• Spring Return to Normal (Vertical) Position
Instrument Switch Special Features
• Make-Before-Break (Shorting) Contacts
• Positive “Snappy” Positioning Detent Mechanism
• Pre-Wired Jumpers
Synchroscope Special Features
• Keyed Removable Oval Handles
Electrical Specifications
Continuous Ratings
• 24A/600 Volts
Interrupt Ratings
• 3A/125VDC • 20A/600VAC
• Momentary Current: 420 Amperes 1 Second
• Making Ability (Circuit Breaker Coils): 120A/125VDC
• Dielectric Strength: 2200V rms
• Insulation Resistance: 100 Megohms
• Contact Resistance: 10 Milliohms
Mechanical Specifications
Sections/Poles 1 to 12 /1 to 24
Positions 2 to 12
Contacts Double Break Silver Plated Copper
Action 45˚, 30˚, 60˚and 90˚ Positive Detent or SpringReturn
Mounting 2 Hole
Panel Thickness 3⁄16" Max. Standard
Construction Contacts Enclosed in Rigid Thermoset Plastic Housing
Special Drives Key Operated
1
2
3
4
5
6
7
8
9
10
11
12
1.5
2.0
2.6
3.1
3.6
4.1
4.7
5.2
5.7
6.2
6.7
7.2
No. of
Decks
Depth
(in)
Note: The Series 20 Class 1E utility products comply with the following Nuclear Standards:
ANSI/IEEE C37.90, ANSI/IEEE C37.90.01, ANSI/IEEE C37.98, ANSI/IEEE C37.105,
ANSI/IEEE 323, ANSI/IEEE 344, ANSI/ASME NQA -1.
ORDERING INFORMATION -
For generic switches fill out appropriate matrix pages 24-27. For special applications see page
28. For any other configurations not shown, consult factory.
Depth
Behind Panel
Approvals
• UL File No. E54035 • CSA Certified
Electroswitch • 180 King Avenue • Weymouth, MA 02188 • TEL: [phone] • FAX: [phone] • www.electroswitch.com
21
ELECTROSWITCH