DETENT-ACTION ROTARY SWITCHES
CONTACT ASSEMBLAGES AND DIAGRAMS
CONTACTS
HANDLE
END
POSITIONS
A
B
C
E
F
G
1
H
A
B
D
E
F
1
2
3
CONTACTS
HANDLE
END
1 2
1 3
1 4
1 6
1 7
1 8
1
1 1
1 2
1 3
1 5
1 6
1 7
S E R I E S 2 1
S E R I E S 2 4 & 3 1
CONTACTS
HANDLE
END
P O S I T I O N S
A
B
C
D
E
F
G
1
H
CONTACTS
HANDLE
END
1 1
1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
S E R I E S 2 1
S E R I E S 2 4 & 3 1
1
2
3
4
5
6
7
OFF
CONTACTS
HANDLE
END
P O S I T I O N S
A
B
C
D
E
F
G
1
H
CONTACTS
HANDLE
END
1 1
1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
S E R I E S 2 1
S E R I E S 2 4 & 3 1
1
2
3
4
5
6
7
8
*
*
*
*
*
*
*
CONTACTS
HANDLE
END
P O S I T I O N S
A
B
C
D
E
F
G
H
1
CONTACTS
HANDLE
END
1
S E R I E S 2 1
S E R I E S 2 4 & 3 1
H
A
B
C
D
E
F
G
1
2
3
4
5
6
7
8
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 1
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
CONTACTS
HANDLE
END
P O S I T I O N S
A
B
C
D
E
F
G
1
H
CONTACTS
HANDLE
END
1 1
1
1 2
1 3
1 4
1 5
1 6
1 7
1 6
S E R I E S 2 1
S E R I E S 2 4 & 3 1
1
2
3
4
*
*
*
CONTACTS
HANDLE
END
P O S I T I O N S
A
B
C
D
E
F
G
1
H
CONTACTS
HANDLE
END
1 1
1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
S E R I E S 2 1
S E R I E S 2 4 & 3 1
1
2
3
4
5
6
7
OFF
CONTACTS
HANDLE
END
POSITIONS
A
B
C
E
F
G
I
J
K
1
S E R I E S 2 5
L
A
B
D
E
F
H
I
J
1
2
3
CONTACTS
HANDLE
END
POSITIONS
D
E
F
G
1
H
A
B
C
1
2
3
4
CONTACTS
HANDLE
END
1 5
1 6
1 7
1 8
1
1 1
1 2
1 3
1 4
S E R I E S 2 1
S E R I E S 2 4 & 3 1
CONTACTS
HANDLE
END
POSITIONS
A
B
C
D
E
F
G
1
H
CONTACTS
HANDLE
END
1 1
1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
S E R I E S 2 1
S E R I E S 2 4 & 3 1
1
2
3
Contact Assemblages
Series 21, 24, & 31 contact diagrams are shown for 8 posi-
tion switches. Series 25 has 12 and Series 28 has 16, and
have similar contact diagrams with more positions.
Series 21, 25, & 28 have alphabetical markings of terminals.
Series 24 and 31 (both single and 4-hole mounts) have the
numerical terminal markings as shown.
Contacting variations that can be used with all Detent
Switches are shown in the assemblage diagrams below. The
handle is shown in the 12 o’clock (0°) position. Either make-
before-break (shorting) or break-before-make (non-shorting)
contacts are available except as noted.
STANDARD CONTACT ASSEMBLAGES AND DIAGRAMS
OPTIONAL CONTACT ASSEMBLAGES AND DIAGRAMS (Consult Factory for More Details)
Number 2
Two poles per section; double-break switching.
This assemblage is normally limited to three positions.
Number 3
One pole per section; provides “OFF” and 7 tap positions.
Number 11
Allows any one circuit to be
opened while the rest are
closed; make-before-break
(shorting) only.
This assemblage is not avail-
able in Series 28.
Number 1
One pole per section; double-break switching.
Number 6
Cumulative tap switch; make-before-break (shorting) only.
This assemblage is normally limited to four positions.
Number 7
Provides double-break switching. This assemblage is normally
limited to four positions.
Number 5
Three poles per section; double-break switching. This assem-
blage is available in, and shown for Series 25 only.
Number 8
Allows pairs of circuits to be fed from a common source.
Number 10
Same as Assemblage 3 except first position is “ON”.
