3900 Metal Toggle Switches
16A 250Vac
- IP67 Sealed Versions
Metal toggle switches
Ratings up to 20A,
125/277V ac
Single and double pole
Choice of circuits
including 3 position and
momentary
Sealed version supplied
complete with gaskets
Panel seal version to
IP67
3 Terminal Options
Guard option
16(4)A 250Vac T85 (3900 & 3950)
10(4)A 250Vac T85 (All other circuits)
UL CSA* 20A 125/277Vac (ON-OFF Circuits)
UL CSA* 16A 125/277Vac (Other Circuits)
UL CSA* 7A 72Vdc, 14A 36Vdc
UL 250Vac 1hp, 125Vac 1/2hp
UL 65˚C, file E45221, CSA file LR10990
RoHS
RoHS compliant
Approvals and ratings vary with function.
3mm contact gap except where marked µ.
Technical data on pages 4 & 5.
* CSA approval for A and B bodies only
toggle
switches
C 3900 B A
ORDER FORMAT
TERMINAL
TERMINAL
CODE
FUNCTION
CODE
ACTUATOR
CODE
BODY
CODE
FUNCTION
Single pole
1
2 3
ACTUATOR
Double pole
4
1
5 6
2 3
C
10.5
B
17.5
3900
6.3 x 0.8
ON - OFF
3950
D
metal
25.4
3901
ON - OFF
(momentary ON)
3951
metal
E
3902
S
3910
ON - ON
ON - OFF
(momentary OFF)
10.5
3952
E
38.1
3960
metal
Screw & clamp
3911
ON - ON
(momentary 1 side)
3961
F
17.5
nylon
3920
ON - OFF - ON µ
3970
Switches with F toggles have
double pole bodies, regardless of circuit
Metal toggle finish is nickel plate
T
10.5
Ø3.1
3921
ON - OFF - ON µ
(momentary 1 side)
3971
3922
Solder
ON - OFF - ON µ
(momentary 2 sides)
3972
34
Phone: 760-343-3650 •
Arcolectric
• Email: americas@elektron-technology.com
Flat washer
(Panel seal)
Diaphragm
(Internal seal)
‘O’ ring seals
(Toggle seal)
C3900BE ---
C3920BA ---
Toggle switch - sealed version
BE and BF types
toggle
switches
Guard TG1-RED
Anti-rotation tab can be specified
for guard fitted in On or Off position
(Guard is suitable for On Off switches only)
C3950BF ---
C3972BB ---
BODY
A
Single pole
Thread: 15/32” x 32TPI
OPTIONS
Switch Boot
(B Actuator only)
Rubber
-57T145
DIMENSIONS
(mm) * Indicates ON position (for ON - OFF switches)
Single Pole
(C terminals shown)
Thread: 15/32” x 32TPI
1.3
Ø12.7
11.1
Keyway
1
Keyway
*
3
2
*
14.0
17.5 10.5 17.0
3
17.5 10.5 17.0
E
Panel sealed, single pole
Thread: 15/32” x 32TPI
Switch Boot
(B & C Actuators)
Rubber
-57T145
29.5
A Body
Thread: 15/32” x 32TPI
Keyway
Keyway
1
1
2
29.5
1
Ø12.7
*
3
2
Boots have internal brass or nylon nuts
14.0
*
17.5 10.5 17.0
3
B
Double pole
17.5 10.5 17.0
Mounting nuts
Nickel plated brass are supplied
E body (panel sealed)
Thread: 15/32” x 32TPI
Double Pole
14.0
Keyway
(C terminals shown with barrier)
Thread: 15/32” x 32TPI
1
2
1.3
Ø12.7
11.1
Hex Back nut
Keyway
31.0
*
3
2
17.5 10.0
31.1
F and G
Panel sealed, double pole
F with barriers, G withoutbarriers
Thread: 15/32” x 32TPI
Knurled Ring nut
Panel thickness 4.0 with backnut
21.5
17.5 10.0
31.1
B Body
Thread: 15/32” x 32TPI
Keyway
1
P236 plate SP or DP
0FF
1
Plate
31.0
Keyway
3
15.0
*
2
1
Ø12.7
*
3
*
21.5
17.5 10.0
31.1
3
2
17.5 10.0
31.1
0N
F body (panel sealed)
2
Phone: 760-343-3650 •
Arcolectric
• Email: americas@elektron-technology.com
35
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