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Miniature Pushbuttons
Series KB
Distinctive Characteristics
Square, rectangular, and round shaped caps. Latchdown feature gives indication of circuit status. Audible and tactile feedback with smooth and responsive operation. Snap-action mechanism for long life. Stainless steel frame on snap-in models has a specially designed projection, which prevents rotation and correctly orients switch in panel. 12mm body diameter. Molded-in terminals lock out flux, dust, and other contaminants. 8mm panel thickness capability. Rear panel bushing or snap-in mounting. Optional PCB adaptors in straight and right angle types. Matching illuminated switches available and shown in the Illuminated section. Matching indicators available and shown at the end of Section M.
Actual Size
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
03-07
Miniature Pushbuttons
Series KB
General Specifications
Electrical Capacity (Resistive Load)
Power Level (code W): Logic Level (code G): 1A @ 125/250V AC or 1A @ 30V DC 0.4VA maximum @ 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V) Note: Find additional explanation of operating range in Supplement section.
Other Ratings
Contact Resistance: Insulation Resistance: Dielectric Strength:
Mechanical Life: Electrical Life: Nominal Operating Force: Contact Timing: Travel:
50 milliohms maximum 1,000 megohms minimum @ 500V DC 1,000V AC minimum between contacts & 1,500 minimum between contacts & case (silver) for 1 minute minimum; 750V AC minimum between contacts & 1,500 minimum between contacts & case (gold) for 1 minute minimum; 100,000 operations minimum 50,000 operations minimum for silver; 100,000 operations minimum for gold Single pole 0.98 ~ 2.45N for maintained & 0.98 ~ 1.96N for momentary; Double pole 1.47 ~ 3.43N for maintained & 1.47 ~ 2.94N for momentary Nonshorting (break-before-make) Pretravel .087" (2.2mm); Overtravel .031" (0.80mm); Total Travel .118" (3.0mm)
Materials & Finishes
Housing: Movable Contactor: Stationary Contacts: Housing Base: Terminal Base: Common Terminal: End Terminals:
Polyamide (UL94V-0) Silver for power circuit; copper with gold plating for logic level circuit Silver for power circuit; copper with gold plating for logic level circuit Polyamide (UL94V-0) Polyester Phosphor bronze with silver flash plating for power circuit; Phosphor bronze with gold flash plating for logic level circuit Brass with silver flash plating for power circuit; Brass with gold flash plating for logic level circuit
Environmental Data
Operating Temp Range: Humidity: Vibration: Shock:
-25C through +70C (-13F through +158F) 90 ~ 95% humidity for 96 hours @ 40C (104F) 10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range & returning in 1 minute; 3 right angled directions for 2 hours 50G (490m/s2) acceleration (tested in 6 right angled directions, with 3 shocks in each direction)
Installation
Mounting Torque: Cap Installation Force: Soldering Time & Temperature:
0.78Nm (6.9 lb*in) maximum 4.51N (1.0 lbf) maximum downward force on cap Manual Soldering: See Profile A in Supplement section.
Standards & Certifications
Flammability Standards: UL & C-UL Recognized:
R
CSA Certified:
UL94V-0 housing & housing base Single & double pole models recognized at 1A @ 125/250V AC, 1A @ 30V DC, & 0.4A @ 28V DC; UL File No. WOYR2.E44145; add "/U" to end of part number to order UL mark on switch; C-UL File No. WOYR8.E44145; add "/C-UL" to end of part number to order C-UL mark on switch Single & double pole models recognized at 1A @ 125/250V AC, 1A @ 30V DC, & 0.4VA @ 28V maximum; CSA File No. 023535-0-000; add "/C" to end of part number to order CSA mark on switch.
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
03-07
Miniature Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Series KB FF
KB
POLES
1 2 SPDT DPDT
2
5
C
SHAPES
K
W01
CAP COLORS
A BB CC Black/None * White/White Red/Red EB FF GG
Bushing Mounting S C R K M N Square Round Rectangular Square Round Rectangular
Yellow/White Green/Green Blue/Blue
* Black available in square and round only. Note: Insert Cap with clear lens and colored filter available; see Illuminated Pushbuttons section
Snap-in Mounting
CIRCUITS
5 6 ON ON (ON) ON ( ) = Momentary Alternate Action with Latchdown
HOUSING
K Black only
CONTACTS & TERMINALS
W01 Silver Contacts and Solder Lug Terminals 1A @ 125/250V AC Gold Contacts and Solder Lug Terminals 0.4VA @ 28V AC/DC
BARRIER TYPE
No No Barrier Code B With Barrier
G01
IMPORTANT:
Switches are supplied without UL, C-UL & CSA marking unless specified. Specific models & ratings noted on General Specifications page.
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
KB25CKW01-FF
Green Cap Round with Bushing Mounting Black Housing DPDT ON-(ON) Circuit
Silver Contacts and Solder Lug Terminals; Rated 1A @ 125/250V AC
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
03-07
Miniature Pushbuttons
POLES & CIRCUITS
Plunger Position ( ) = Momentary Normal Pole SP DP Model KB15 *KB16 KB25 *KB26 ON ON ON ON (ON) ON (ON) ON 2-3 2-3 5-6 2-1 2-1 5-4 Down Connected Terminals Normal Down
Series KB
Throw & Schematics Note: Terminal numbers are not actually on the switch.
2 (COM)
SPDT DPDT
3
3 2 (COM) 1 6
1 5 4
* When in latchdown position for the alternate circuit, cap position is .055" (1.4mm) above the built-in bezel.
SHAPES & MOUNTING TYPES
Bushing Mounting .551" (14.0mm) Square .551" (14.0mm) Round .551" x .728" (14.0mm x 18.5mm) Rectangular
S
C
R
No barrier
With barrier
No barrier
With barrier
Bezel or barrier is an integral part of the switch body. One mounting nut AT057 supplied with each switch. Snap-in Mounting
K
.551" (14.0mm) Square
M
.551" (14.0mm) Round
N
.551" x .728" (14.0mm x 18.5mm) Rectangular
No barrier
With barrier
No barrier Bezel or barrier is an integral part of the switch body. Panel Cutouts
With barrier
Bushing Mounting
(1.8) .071 (4.9) .193 (12.3) Dia .484
Snap-in Mounting
(1.2) R .047
Without Keyway
(12.3) Dia .484
Panel Thickness: .020" ~ .315" (0.5 ~ 8.0mm)
With Keyway
Panel Thickness: .039" ~ .138" (1.0 ~ 3.5mm)
(6.8) .268
(12.3) Dia .484
Panel thicknesses, when using optional accessories, are shown with the accessories at the end of this KB section. Socket wrench AT108 may be used for bushing mounting. Overtightening the mounting nut may damage the switch housing.
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07
Miniature Pushbuttons
HOUSING K
Housing available in black only. Bezel or barrier is an integral part of the switch body.
Series KB
CONTACT MATERIALS, RATINGS & TERMINALS W G
Silver Contacts Power Level 1A @ 125V AC & 250V AC Logic Level 0.4VA maximum @ 28V AC/DC
01
Solder Lug
(5.0) .197 (2.0) (1.8) .079 .071 (1.0) .039 Thk = (0.2) Com = (0.1) .008 .005
Gold Contacts
Complete explanation of operating range in Supplement section. AT055 Crossover Guard A partitioned plastic guard is supplied with each switch to provide insulation between terminals. Installation steps: 1. 2. 3. 4. Identify wire-to-terminal connections. Thread wires through the guard. Solder the connections. Push the guard fully onto the switch body.
(12.4) Dia .488
(14.0) Dia .551 (17.0) .669
Material: Polypropylene
BARRIER TYPE No Code
No Barrier Built-in bezel
B
With Barrier Built-in barrier only available for square and rectangular
CAPS & CAP COLORS
Colors Available:
A BB CC EB FF GG
Black (Not available in Rectangular) White/White Red/Red Yellow/White Green/Green Blue/Blue
AT485 Square
AT486 Round
AT4021 Rectangular
(11.6) Sq .457 (4.5) .177 (6.2) .244
(11.6) Dia .457 (4.5) .177 (6.2) .244
(11.6) .457
(16.1) .634 (4.5) .177 (6.3) .248
Material: Polycarbonate
Finish: Glossy
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
03-07
Miniature Pushbuttons
TYPICAL SWITCH DIMENSIONS
Square * Bushing Mount Single & Double Pole
Series KB
(5.0) .197
M12 P1
(1.0) x (2.0) Typ .039 x .079 (0.2) Typ .008 (4.9) .193
COM
(1.8) .071
6 5 4 3 2 1
Keyway (.127) .005
(1.8) Typ .071
(5.08) .200 (1.7) Typ .067
(11.6) Sq .457 (14.0) Sq .551
(1.4) .055 (3.5) .138
(5.3) (24.7) .209 .972 Latchdown Position
(14.2) .559
(1.0) .039
(5.0) .197
(9.0) .354
KB15SKW01-GG
Single pole models do not have terminals 4, 5, & 6.
Round * Bushing Mount
Single & Double Pole
(5.0) .197
M12 P1
(1.0) x (2.0) Typ .039 x .079 (0.2) Typ .008 (4.9) .193
COM
(1.8) .071
Keyway (.127) .005
6 5 4
3 2 1
(1.8) Typ .071 (11.6) Dia .457 (14.0) Dia .551 (1.4) .055 (3.5) .138 (14.2) .559 (24.7) (5.3) .972 .209 Latchdown Position (1.0) .039
(5.08) .200 (1.7) Typ .067
(5.0) .197
(9.0) .354
KB25CKW01-GG
Single pole models do not have terminals 4, 5, & 6.
Rectangular * Bushing Mount
Single & Double Pole
(5.0) .197 (11.6) .457 (14.0) .551
M12 P1
(1.0) x (2.0) Typ .039 x .079 (0.2) Typ .008 (4.9) .193
COM
(1.8) .071
6 5 4 3 2 1
Keyway (.127) .005
(1.8) Typ .071 (16.1) .634 (18.5) .728 (14.2) .559 (24.7) (5.3) .972 .209 Latchdown Position
(5.08) .200 (1.7) Typ .067
(1.4) .055 (3.5) .138
(1.0) .039 (5.0) .197
(9.0) .354
KB15RKW01-GG
Single pole models do not have terminals 4, 5, & 6. 03-07
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
Miniature Pushbuttons
TYPICAL SWITCH DIMENSIONS
Square * Snap-in Mount Single & Double Pole
Series KB
(1.0) x (2.0) Typ .039 x .079 (0.2) Typ .008 (4.9) .193
COM
(1.8) .071
6 5 4 3 2 1
Keyway (.127) .005
(2.3) .090 (11.6) Sq .457 (14.0) Sq .551 (1.4) .055 (3.5) .138 (1.0) .039
(1.8) Typ .071
(5.08) .200 (1.7) Typ .067
(5.3) (24.7) .209 .972 Latchdown Position
(5.0) .197
(9.0) .354
KB16KKW01-CC
Single pole models do not have terminals 4, 5, & 6.
Round * Snap-in Mount
Single & Double Pole
(1.0) x (2.0) Typ .039 x .079 (0.2) Typ .008 (4.9) .193
COM
(1.8) .071
6 5 4 3 2 1
Keyway (.127) .005
(2.3) .090 (11.6) Dia .457 (14.0) Dia .551 (1.4) .055 (3.5) .138 (1.0) .039 (5.0) .197
(1.8) Typ .071
(5.08) .200 (1.7) Typ .067
(5.3) (24.7) .209 .972 Latchdown Position
(9.0) .354
KB26MKW01-CC
Single pole models do not have terminals 4, 5, & 6.
Rectangular * Snap-in Mount
Single & Double Pole
(1.0) x (2.0) Typ .039 x .079 (11.6) .457 (14.0) .551 (0.2) Typ .008 (4.9) .193
COM
(1.8) .071
6 5 4 3 2 1
Keyway (.127) .005 (5.08) .200 (1.7) Typ .067
(1.8) Typ .071 (16.1) .634 (18.5) .728 (1.4) .055 (3.5) .138 (1.0) .039 (5.3) (24.7) .209 .972 Latchdown Position (5.0) .197
(9.0) .354
KB16NKW01-CC
Single pole models do not have terminals 4, 5, & 6. 03-07
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
Miniature Pushbuttons
TYPICAL SWITCH DIMENSIONS
Square * Barrier * Bushing Mount Single & Double Pole
(5.0) .197 M12 P1 (1.0) x (2.0) Typ .039 x .079 (0.2) Typ .008 (4.9) .193
Series KB
(1.8) .071
6 5 COM 4 3 2 1
Keyway (.127) .005
(1.8) Typ .071
(5.08) .200 (1.7) Typ .067
(11.6) Sq .457 (14.0) Sq .551
(5.3) .209 (8.8) .346
(14.2) .559 (24.7) .972
(1.0) .039
(5.0) .197
(9.0) .354
KB15SKW01B-BB
Single pole models do not have terminals 4, 5, & 6.
Square * Barrier * Snap-in Mount
Single & Double Pole
(1.0) x (2.0) Typ .039 x .079 (0.2) Typ .008 (4.9) .193
COM
(1.8) .071
6 5 4 3 2 1
Keyway (.127) .005
(1.8) Typ .071 (5.3) .209 (8.8) .346 (1.0) .039
(5.08) .200 (1.7) Typ .067
(11.6) Sq .457 (14.0) Sq .551
(24.7) .972
(5.0) .197
(9.0) .354
KB15KKW01B-CC
Single pole models do not have terminals 4, 5, & 6.
Rectangular * Barrier * Bushing Mount
Single & Double Pole
(5.0) .197 M12 P1 (1.0) x (2.0) Typ .039 x .079 (0.2) Typ .008 (4.9) .193
COM
(1.8) .071
6 5 4 3 2 1
Keyway (.127) .005
(11.6) .457 (14.0) .551
(1.8) Typ .071
(5.08) .200 (1.7) Typ .067
(16.1) .634
(18.5) .728
(5.3) .209 (8.8) .346
(14.2) .559 (24.7) .972
(1.0) .039
(5.0) .197
(9.0) .354
KB15RKW01B-FF
Single pole models do not have terminals 4, 5, & 6.
Rectangular * Barrier * Snap-in Mount
Single & Double Pole
(1.0) x (2.0) Typ .039 x .079 (1.8) .071 (4.9) .193
COM 6 5 4 3 2 1
Keyway (.127) .005 (5.08) .200 (1.7) Typ .067
(11.6) .457 (14.0) .551
(0.2) Typ .008
(1.8) Typ .071 (5.3) .209 (8.8) .346 (1.0) .039
(16.1) .634
(18.5) .728
(24.7) .972
(5.0) .197
(9.0) .354
KB15NKW01B-GG
Single pole models do not have terminals 4, 5, & 6. 03-07
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
Miniature Pushbuttons
OPTIONAL ACCESSORIES
PCB Adaptors AT701 Single Pole Straight PC Terminals AT702 Double Pole Straight PC Terminals AT077 Single Pole Right Angle PC Terminals
Series KB
Switch (2.8) Depth .110
(0.3) .012
Keyway
(0.2) Typ .008 (2.54) Typ .100
6 5 4 3 NC COM 2 NO 1
Switch (2.8) Depth .110
(0.3) .012
Keyway
(0.2) Typ .008 (2.54) Typ .100
6 5 4 3 NC COM 2 NO 1
Switch (2.8) Depth .110 (12.0) Dia .472
(9.8) .386
(0.4) .016 (6.0) .236 (11.4) .449
+
-
(12.0) Dia .472 (0.6) Typ .024 (9.8) .386 (3.1) .122
+
(12.0) Dia .472 (0.2) Typ .008 (2.54) Typ .100 (0.6) Typ .024 (9.8) .386 (3.1) .122
+
(10.16) .400
(10.16) .400
(0.2) Typ .008 (2.54) Typ .100
3
2
1
(0.4) Typ .016 (7.62) .300
(1.4) Typ .055 (0.8) Typ .031
(13.0) .512
(1.2) Typ .047 (2.54) Typ .100
3
(2.54) Typ (2.54) Typ .100 .100 NC (0.8) Dia Typ .031
3
(2.54) Typ (2.54) Typ .100 .100 NC 6
5 4
(2.54) Typ .100
1 2 3
2 COM 1 NO
2 COM 1 NO
(7.62) .300 (10.16) .400 (1.8) Dia Typ .071
(10.16) .400
(10.16) .400
(0.8) Dia Typ .031
Material: Glass fiber reinforced polyamide Dust Covers
Note: Order adaptors separately.
Panel Thickness Range: .020" ~ .268" (0.5 ~ 6.8mm) for Bushing Mounting; .020" ~ .079" (0.5 ~ 2.0mm) for Snap-in Mounting. Dust Covers reduce the depth of switch behind panel by .047" (1.2mm).
AT495 For Square & Round (not for Barrier type)
AT4025 For Rectangular (not for Barrier type)
Assembled Cap Height
(7.0) .276
(1.2) R .047
Assembled Cap Height
(1.2) R .047
(13.0) Sq .512
(5.1) .201
(12.3) Dia .484
(13.0) Sq .512
(12.3) Dia .484 (21.0) .827
(6.5) .256 (11.8) .465
(1.6) .063 (21.0) Sq .827
(6.5) .256 (11.8) .465
(7.0) .276 (25.4) 1.004
Material:
Lid: PVC
PVC loses pliability below 0C (32F).
Base: Polyamide
03-07
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
Miniature Pushbuttons
OPTIONAL ACCESSORIES
AT494 Protective Guard For Square & Round (not for Barrier type)
Assembled Cap Height (7.0) .276 (1.2) R .047
Series KB
AT4024 Protective Guard For Rectangular (not for Barrier type)
Assembled Cap Height (9.0) .354 (5.1) .201 (7.0) .276 (1.2) R .047
(12.3) Dia .484
(9.0) .354
(12.3) Dia .484 (19.0) .748
(6.5) .256 (11.5) .453
(1.6) .063 (19.0) Sq .748
(6.5) .256 (11.5) .453
(23.5) .925
Cover Material: Polycarbonate
Base Material: Polyamide
Panel Thickness Range: .020" ~ .268" (0.5 ~ 6.8mm) for Bushing Mounting; .020" ~ .091" (0.5 ~ 2.3mm) for Snap-in Mounting. Protective Guards reduce the depth of switch behind panel by .047" (1.2mm).
ASSEMBLY INSTRUCTIONS
Cap Removal & Installation For alternate action models cap must be in UP position for cap removal. Indentations on opposite sides of the cap provide an easy way to lift the cap out of the holder, using either the finger nails, or cap extractor AT109. Cap Replacement Note that the cap has a pair of round tabs and a pair of long tabs which should be used for correctly replacing the cap in its holder. Using the long tabs as guides, slide the cap with the long tabs moving into the slots on opposite sides of the cap holder. Then, the round tabs will snap into notches on the other two sides of the holder.
Cap Indentation Long Tab Notch Round Tab Slot
AT109 Cap Extractor
LEGENDS
Easily create and submit your own legends using our new on-line Legend Maker. Visit www.nkkswitches.com
For other legend support options, customers may either contact the factory and request the EB Legend Packet, or utilize the general information and basic specifications presented below. Suggested Printable Area for Lens
LM
T AR ST
Recommended Methods: Laser Etch on clear lens, Screen Print or Pad Print on lens. Epoxy based ink is recommended.
(10.08) (11.6) .397 .457
(10.08) Sq .397 (11.6) Sq .457
(0.76) Typ .030
(10.08) Dia .397 (11.6) Dia .457
(0.76) Typ .030
(0.76)Typ .030
(14.58) .574 (16.1) .634
(0.76) Typ .030
Shaded areas are printable areas. Additional Method: Maximum depth for engraving is .012" (0.3mm) on the cap lens. Enamel paint is recommended to fill the engraved area.
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07

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