Snap Switch Pushbuttons Series SCB
GENERAL SPECIFICATIONS
Electrical Capacity
Other Ratings
1
Resistive Load:
Lamp Load:
15A & ⁄ HP @ 125 or 250V AC for high capacity models
2
5A @ 125V AC
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
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
Mechanical Life:
Electrical Life:
50,000 operations minimum
Travel:
Operating Temp Range:
Pretravel .047” (1.19mm); Overtravel .040” (1.01mm); Differential .011” (0.27mm)
–40°C through +85°C (–40°F through +185°F)
Materials & Finishes
Caps & Shrouds:
Polycarbonate with glossy finish or PBT
Polyacetal or brass with nickel plating
Steel with zinc plating or glass fiber reinforced polyamide
Polyester
Plunger:
Bushing:
Case:
Movable & Stationary Contacts:
Terminals:
Silver alloy
Brass with silver plating
Standards & Certifications
UL Recognized:
Internal snap switch is UL recognized.
Internal snap switch is CSA certified.
CSA Certified:
TYPICAL SWITCH ORDERING EXAMPLE
SCB 2 5 P 15 A
4 CA
POLES
CAPS & SHROUDS
1
2
SPDT
DPDT
For Momentary
TERMINALS
1
2
3
.315” (8.0mm) Diameter Cap
.394” (10.0mm) Diameter Cap
.520” (13.2mm) Diameter Cap
A
.187” (4.75mm) Quick Connect
.250” (6.35mm) Quick Connect
CIRCUITS
B
5
ON (ON)
Note: Contact factory for availability of
screw lug and solder lug models.
For Momentary & Alternate Action
6
ON
ON
4
5
Round Cap and Shroud
( ) = Momentary
Rectangular Cap and Shroud
BUSHINGS
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
SCB25P15A-4CA
COLORS
Plastic (with
P
Caps
Shrouds
momentary only)
A
B
Black
White
Red
A
B
–
S
Steel
Round Red Cap with
Black Shroud
C
F
RATING
Plastic Bushing
Green
Blue
–
15 15A
G
H
–
DPDT
ON-(ON) Circuit
.187” (4.75mm)
Quick Connect
Terminals
Gray
H
15A Rating
Note: Standard hardware provided with caps. See Bushing detail for more information.
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
05-08