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