Series SB Low/Medium Capacity Pushbuttons GENERAL SPECIFICATIONS FOR SB25, SB60s, SB221s, SB265 Electrical Capacity (Resistive Load) Power Level: Shown in the following tables Other Ratings Contact Resistance: 10 milliohms maximum C Insulation Resistance: 200 megohms minimum 500V DC for SB221s, SB25, & SB265 1,000 megohms minimum 500V DC for SB60s. Dielectric Strength: 1,500V AC minimum for SB265 & SB25 for 1 minute minimum 2,000V AC minimum between contacts for SB221s & SB60s for 1 minute minimum 1,500V AC minimum between contacts & case for SB221s & SB60s for 1 minute minimum Mechanical Life: 50,000 operations minimum for SB221s 30,000 operations minimum for SB25, SB60s, SB265 Electrical Life: 10,000 operations minimum Total Travel: SB221s .116 (2.95mm) SB60s .094 (2.4mm) SB265 .213 (5.4mm) SB25 .195 (4.95mm) Operating Temp Range: 10C through +70C (+14F through +158F) Materials & Finishes Cap: Polybutylene terephthalate (PBT) (AT414) Plunger: Polyacetal Bushing: Brass with nickel plating Case: Phenolic resin or melamine phenolic resin Case Cover: Steel with zinc plating Movable & Stationary Contacts: Copper with silver plating for SB221s silver alloy with silver plating for SB25, SB60s, & SB265 Terminals: Copper with tin plating for SB25 & SB60s copper with silver plating for SB265 Installation Soldering Time & Temp: Manual Soldering (Solder Lug): See Profile A in Supplement section. Standards & Certifications UL: File No. E44145 - Recognized only when ordered with marking on switch. Add /U or /CUL to end of part number to order UL recognized switch. UL or cULus recognition designated beside part numbers on following pages. See Supplement section to find UL or cULus rating details. CSA: File No. 023535 0 000 - Certified only when ordered with marking on switch. Add /C to end of part number to order CSA certified switch. CSA certification designated beside part numbers on following pages. See Supplement section to find CSA rating details. C128 www.nkkswitches.com 03/18/20 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesLow/Medium Capacity Pushbuttons Series SB SINGLE POLE WITH SOLDER LUG OR SCREW LUG * UL, cULus & CSA recognized only when ordered with marking Pushbutton Position/Connected Terminals Electrical Capacity (Resistive) on switch (see General Specs) ( ) = Momentary *Approvals Normal Down Pole & AC AC Keyway Model R 125V 250V R CUS Throw SB221NO SPST OFF (ON) 1-4 3A 1.5A SB221NC SPST ON 1-4 (OFF) 3A 1.5A SB221TNO SPST OFF (ON) 1-4 3A 1.5A SB221TNC SPST ON 1-4 (OFF) 3A 1.5A C SPST SPST Note: Terminal numbers are Suffix T = Throw & 14 Screw Lug SB221NO SB221NC 14 actually on the switch. Schematic: Notes: Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section. Keyway M12 P1 (8.0) .315 (7.0) (0.8) M3 x P0.5 x 4 (13.2) Dia (25.5) .276 .031 .520 1.004 4 (12.5) Dia 1 .492 (8.0) .315 (11.5) .453 (2.4) Dia B .094 (13.2) (11.0) (12.0) (15.7) (0.8) (1.5) A .520 .433 .472 .618 .031 .060 SB221NO Dimension A: .185 (4.7mm) for NO model & .150 (3.8mm) for NC model. Panel Thickness Supplied with Dimension B Plunger Extension: .197 (5.0mm) for NO model & .161 (4.1mm) for NC model193 (4.9mm) AT414 Black Cap DOUBLE POLE WITH SOLDER LUG * UL & cULus recognized only when ordered with Electrical Capacity (Resistive) Pushbutton Position/Connected Terminals ( ) = Momentary marking on switch (see General Specs) *Approvals Normal Down Pole & AC AC Keyway Model R 125V 250V Throw R CUS SB61A ON 2-3 5-6 (ON) 2-1 5-4 10A 5A SB61B DPDT ON 2-3 5-6 (ON) 2-1 5-4 3A 1.5A SB63A DPDT ON 2-3 5-6 (ON) or Lockdown ON 2-1 5-4 10A 5A Lockdown for SB63A is 2 (COM) 5 Note: Terminal numbers are achieved by actuating and then Throw & DPDT actually on the switch. 13 4 6 Schematic: turning the button clockwise. Notes: Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section. Keyway M12 P1 (2.4) Dia Typ .094 (12.5) Dia .492 6 3 (11.5) (4.8) Typ (31.2) (13.2) Dia .453 .189 1.228 .520 5 2 COM 4 1 (1.5) .060 (5.6) (5.7) .220 .224 (11.0) (14.0) (25.7) (0.8) Typ (18.6) A .433 .551 1.012 .031 .732 SB61A Panel Thickness Supplied with Dimension A: .169 (4.3mm) for SB61 model and .130 (3.3mm) for SB63 model193 (4.9mm) AT414 Black Cap www.nkkswitches.com C129 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles