Page 1
17.5
B
10.5
10.5
123
123
456
3900 Metal Toggle Switches 16A 250Vac - IP67 Sealed Versions
toggle
switches
C 3900 B E - - -
TERMINAL FUNCTION ACTUATOR BODY OPTIONS
៉ Metal toggle switches
៉ Ratings up to 20A,
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
៉ 6.3mm terminals
៉ Guard option
Approvals and specifications
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
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
TERMINAL ACTUATORFUNCTION
C
Single pole Double pole
3900 3950
6.3 x 0.8
ON - OFF
3901 3951
ON - OFF
(momentary ON)
B
metal
Metal toggle finish is nickel plate
3902 3952
ON - OFF
(momentary OFF)
3910 3960
ON - ON
3911 3961
ON - ON
(momentary 1 side)
3920 3970
ON - OFF - ON µ
34
3921 3971
ON - OFF - ON µ
(momentary 1 side)
Other terminals to special order
3922 3972
ON - OFF - ON µ
(momentary 2 sides)
tel: +44 (0)20 8979 3232 • Arcolectric • email:
europe@elektron-technology.com
Page 2
0FF
0N
15.0
14.0
Thread: 15/32” x 32TPI
31.1
1
2
3
10.017.5
Keyway
*
Ø12.7
11.1
1.3
Thread: 15/32” x 32TPI
17.010.517.5
1
2
3
Keyway
*
31.0
21.5
Thread: 15/32” x 32TPI
31.1
1
2
3
10.017.5
Keyway
*
Ø12.7
11.1
1.3
29.5
14.0
Thread: 15/32” x 32TPI
17.010.517.5
1
2
3
Keyway
*
Thread: 15/32” x 32TPI
17.010.517.5
1
2
3
Keyway
*
Thread: 15/32” x 32TPI
31.1
1
2
3
10.017.5
Keyway
*
Ø12.7
29.5
14.0
Thread: 15/32” x 32TPI
17.010.517.5
1
2
3
Keyway
*
31.0
21.5
Thread: 15/32” x 32TPI
31.1
1
2
3
10.017.5
Keyway
*
Ø12.7
Flat washer
(Panel seal)
Diaphragm
(Internal seal)
Toggle switch - sealed version
BE and BF types
BODY OPTIONS
A
Single pole
‘O’ ring seals
(Toggle seal)
Guard R17-10
Neck Seal A0539MOAAA
Actuator is visible
C3900BE - -- C3920BA - --
C3950BF - -- C3972BB ---
DIMENSIONS (mm) * Indicates ON position (for ON - OFF switches)
Single Pole
(C terminals shown)
switches
toggle
E
Panel sealed, single pole
B
Double pole
F
Panel sealed, double pole
Cover A1080MOAAA
Covers have internal nylon nuts
Fixing nuts
Nickel plated brass are supplied
Hex Back nut
Knurled Front nut
Panel thickness 4.0 with backnut
Plate F00232PAAA
Plate SP or DP
A Body
E body (panel sealed)
Double Pole
(C terminals shown with barrier)
B Body
tel: +44 (0)20 8979 3232 • Arcolectric • email:
europe@elektron-technology.com
F body (panel sealed)
35
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