NKK SCB25S15B-2B

Snap Switch Pushbuttons
Series SCB
GENERAL SPECIFICATIONS
Electrical Capacity Resistive Load: 15A & 1⁄2 HP @ 125 or 250V AC for high capacity models
Lamp Load: 5A @ 125V AC
Other Ratings
Contact Resistance: Insulation Resistance: Dielectric Strength: Mechanical Life: Electrical Life: Travel: Operating Temp Range: Materials & Finishes
Caps & Shrouds:
Plunger:
Bushing:
Case:
Movable & Stationary Contacts:
Terminals:
Standards & Certifications
UL Recognized:
CSA Certified:
15 milliohms maximum
100 megohms minimum @ 500V DC
1,000V AC minimum between contacts for 1 minute minimum;
1,500V AC minimum between contacts & case for 1 minute minimum
1,000,000 operations minimum
50,000 operations minimum
Pretravel .047” (1.19mm); Overtravel .040” (1.01mm); Differential .011” (0.27mm)
–40°C through +85°C (–40°F through +185°F)
Polycarbonate with glossy finish or PBT
Polyacetal or brass with nickel plating
Steel with zinc plating or glass fiber reinforced polyamide
Polyester
Silver alloy
Brass with silver plating
Internal snap switch is UL recognized.
Internal snap switch is CSA certified.
TYPICAL SWITCH ORDERING EXAMPLE
SCB
2
5
P
15
A
POLES
1
SPDT
2
DPDT
CA
CAPS & SHROUDS
TERMINALS
CIRCUITS
5
ON
(ON)
6
ON
ON
A
.187” (4.75mm) Quick Connect
B
.250” (6.35mm) Quick Connect
Note: Contact factory for availability of
screw lug and solder lug models.
( ) = Momentary
BUSHINGS
P
Plastic (with
momentary only)
S
Steel
For Momentary
1
.315” (8.0mm) Diameter Cap
2
.394” (10.0mm) Diameter Cap
3
.520” (13.2mm) Diameter Cap
For Momentary & Alternate Action
4
Round Cap and Shroud
5
Rectangular Cap and Shroud
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
SCB25P15A-4CA
Plastic Bushing
15A
DPDT
ON-(ON) Circuit
15A Rating
COLORS
Caps
Round Red Cap with
Black Shroud
RATING
15
4
.187” (4.75mm)
Quick Connect
Terminals
Shrouds
A
Black
A
B
White
B
C
Red
–
F
Green
–
G
Blue
–
H
Gray
H
Note: Standard hardware provided with caps. See Bushing detail for more information.
NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
05-08
Snap Switch Pushbuttons
Series SCB
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Normal
Connected Terminals
Down
Normal
Keyway
Throw & Schematics
Down
Note: Terminal numbers are
actually on the switch.
Keyway
Pole
Model
SP
SCB15
SCB16
ON
ON
(ON)
ON
DP
SCB25
SCB26
ON
ON
(ON)
ON
1-2
1-3
1-2 1-2
1-3 1-3
SPDT
1
SP with
2 switches
1
2
3
2
3
2
1
3
BUSHINGS
P
Plastic
(for Momentary only)
(12.5) Dia
.492
S
(12.5) Dia
.492
Steel
(11.5)
.453
(11.5)
.453
(1.5)
.060
(10.0)
.394
Max. Effective Panel Thickness:
.165” (4.2mm) without Shroud
.157” (4.0mm) with Shroud
(1.5)
.060
A
“A” =
11.2mm
Momentary
15.5mm
Alternate Action
Max. Effective Panel Thickness:
Momentary: .177” (4.5mm) without Shroud
.157” (4.0mm) with Shroud
Alternate Action:.354” (9.0mm)
Standard Hardware Provided with Caps
Cap Options 1, 2, & 3: AT504M Knurled Face Nut, AT508 Lockwasher, AT527M Hex Mounting Nut
Cap Options 4 & 5: AT508 Lockwasher & AT527M Hex Mounting Nut
TERMINALS
A
.187” (4.75mm)
Quick Connect
(3.18)
.125
B
(10.16)
.400
(9.78)
.385
.250” (6.35mm)
Quick Connect
(10.54)
.415
(8.38)
.330
(4.06)
.160
(4.75)
.187
Thk = (0.5)
.020
(6.35)
.250
Thk = (0.81)
.032
TYPICAL SWITCH DIMENSION
.315” (8.0mm) Dia. Cap • .250” (6.35mm) Quick Connect
(0.81) Typ
.032
CL
NC 2
(8.08)
.318
NO 3
(6.35)
.250
(1.02)
.040 (14.35)
.565
(8.38)
.330
(10.54)
.415
(22.23)
.875
(28.2)
1.110
(28.83)
1.135
M12 P1
COM
1
(8.0) Dia
.315
Keyway
SCB15P15B-1C
CL
(14.0)
.551
(6.5)
.256
(10.8)
.425
(0.6)
.024
(10.6)
.417
(10.3)
.406
(22.1)
.870
(4.06)
.160
(7.85) Max
.309
(10.16)
.400
(18.0)
.709
NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
05-08
Snap Switch Pushbuttons
Series SCB
TYPICAL SWITCH DIMENSIONS
.394” (10.0mm) Dia. Cap • .187” (4.75mm) Quick Connect
(5.84)
.230
(0.5) Typ
.020
CL
NC 2
NO 3
(4.75)
.187 (3.18)
.125
(1.02)
.040 (13.97)
.550
(9.78)
.385
(10.16)
.400
(22.23)
.875
(28.0)
1.102
(28.83)
1.135
M12 P1
(4.5)
.177
COM
1
(10.0) Dia
.394
Keyway
(8.0)
.315
(11.8)
.465
CL
SCB15S15A-2A
(10.16)
.400
(18.0)
.709
(7.85) Max
.309
(10.3)
.406
(21.6)
.850
(11.2)
.441
.520” (13.2mm) Dia. Cap • .187” (4.75mm) Quick Connect
CL
(5.84)
.230
(0.5) Typ
.020
NC 2
NO 3
(4.75)
.187 (3.18)
.125
(1.02)
.040 (13.97)
.550
(9.78)
.385
(10.16)
.400
(22.23)
.875
(28.0)
1.102
(28.83)
1.135
M12 P1
(4.5)
.177
COM
1
(13.2) Dia
.520
(11.0)
.433
(14.2)
.559
CL
SCB15S15A-3C
(7.85) Max
.309
(10.3)
.406
(21.6)
.850
Keyway
(11.2)
.441
(10.16)
.400
(18.0)
.709
Round Cap & Shroud • .187” (4.75mm) Quick Connect
(14.0)
.551
Shown with (4.0) Panel
.157
NC 2
NO 3
SCB25P15A-4CA
(1.02)
.040 (13.97)
.550
(9.78)
.385
(10.16)
.400
(22.23)
.875
(28.2)
1.110
(28.83)
1.135
COM
1
(17.7) Dia
.697
(24.0) Dia
.945
(2.0)
.079
(12.0)
.472
(21.2)
.835
(4.75) Typ
.187
(3.18)
.125
(5.84)
.230
(0.5) Typ
.020
(7.85) Max
.309
M12 P1 (10.3)
.406
(0.6)
.024
(22.1)
.870
(20.32)
.800
(27.0)
1.063
Rectangular Cap & Shroud • .250” (6.35mm) Quick Connect
(20.7)
.815
Shown with (4.0) Panel
.157
(8.08)
.318
(0.81) Typ
.032
NC 2
NO 3
M12 P1
(6.35) Typ
.250
(4.06)
.160
(1.02)
.040 (14.35)
.565
(8.38)
.330
(10.54)
.415
(22.23)
.875
(28.4)
1.118
(28.83)
1.135
COM
1
(19.4)
.764
(26.2)
1.031
Keyway
SCB26S15B-5CA
(15.4)
.606
(21.0)
.827
(2.0)
.079
(12.0)
.472
(48.1)
1.893
(10.3)
.406
(21.6)
.850
(7.85) Max
.309
(20.32)
.800
(27.0)
1.063
NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
05-08