Series 21 Rotary Switch

Series 21
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
Mechanical Specifications
Switch sections
1-30
Switch poles
1-60
Switch positions
2-8
Switch detent angle
45°
Electrical Specifications
Continuous rating
15A-600V
Max. breaking ability
30A
Max. making ability
30A
Momentary current
30 seconds, 35A
60 seconds, 35A
3 seconds, 140A
Interrupting current
120VAC, 15A
240VAC, 7.5A
24VDC, 10A
600VAC, 4A
125VDC, 2A
Overload current
120VAC, 30A
Dielectric strength
2200Vrms
Insulation resistance
100 megaohms
Contact resistance
10 miliohms
Switch mountings
4-hole
Waterproof Mount
Locking features
Solenoid Lock
Pull-To-Turn
Optional features
Ganged Gear Operated
Spring Return
Approvals
UL Recognized
CSA Certified
Detent Handles - Series 21, 25, 28 and 31
Detent Action Special Solutions
How to Limit Your Switch in the Field - 45 Degree Switches
Construction Details-Detent switches
Series 21 Information Page

Series Drawings

Blank Detent Worksheet

Standard Part # Drawings

21103A 🔒
21105A 🔒
21201A 🔒
21202A 🔒
21203A 🔒
21204A 🔒
21205A 🔒
21206A 🔒
21207A 🔒
21208A 🔒
21210A 🔒
21211A 🔒
21215A 🔒
21220B 🔒
21301A 🔒
21302A 🔒
21303A 🔒
21304A 🔒
21306A 🔒
21307A 🔒
21308A 🔒
21309A 🔒
21310A 🔒
21312A 🔒
21315A 🔒
21316B 🔒
21320B 🔒
21324B 🔒
2133OD 🔒
41301A 🔒
41302A 🔒
51301B 🔒
51303B 🔒
51305B 🔒
61201B 🔒
61203B 🔒
61204B 🔒
61320B 🔒

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