300 & 400 series
Miniature pushbutton switches
Distinctive features and specifications
Dry circuit through power ratings .
Compact size.
Panel, panel & PC and PC mounting models.
ELECTRICAL SPECIFICATIONS
• Max. current/voltage rating with resistive load :
- gold over nickel plated brass contacts : 0.4VA - 20V Max.
- coin silver contacts : 1A 125VAC or 28VDC, 0.5A 250VAC, 3A
125VAC or 28VDC,
• Initial contact resistance : 10 milliohms max. at 3VDC, 0.1 Amp.
• Insulation resistance : 10,000 MΩ min.
• Dielectric strength : 1,000 Vrms min at sea level.
• Electrical life :
Model
Contacts
300
(Q) coin silver
300
(B) gold
300
400
400
400
(Q) coin silver
(Q) coin silver
(Q) coin silver
(B) gold
Rating
Number of cycles
3A 125VAC or 28VDC
10,000
1A 125VAC or 28 VDC
250,000
0.4VA max. at 20V
250,000
3A 125VAC or 28VDC
10,000
1A 125VAC or 28 VDC
0.4VA max. at 20V
MATERIALS
• Base: diallyphthalate (DAP)
• Actuator: nylon
• Bushing: nickel plated brass
• Contacts
B: Gold
Q: Coin silver
• Terminal seal: epoxy
• Spring bracket: stainless steel
• Support bracket: brass or tin
plated steel
• Bezel and cap: nylon
40,000
40,000
GENERAL SPECIFICATIONS
AGENCY APPROVAL
•Operating temperature : -30°C to +85°C
Availability: All models with
coin silver contacts (Q) only.
Marking:: To order switches
marked UL, complete
appropriate box on ordering
format.
APEM
www.apem.com
B
300 & 400 series
Miniature pushbutton switches
Overview
E
SERIES
Bushing
301
302
305
306
401
402
B
T1
2
8
Standard
Long (see dwg. - specify for
all models with bezels-not
available for 306)
Bezel color
Black
White
2
6
Terminations
Z
Solder lug
C
Printed circuit board
V-1 Right angle p.c.
terminals for 301,
302, 305, 401 & 402
only. (see dwg)
Red
E
Bezel & Cap
Snap-in
Sealing
Epoxy
Agency approval
Cap Color
Black
J81
B Gold
Q Coin Silver
None
Standard 15/32” thd’d.
(see dwg - 301, 303 &
305 only).
Actuators
S
Contact material
/UL
No approval
UL Approval
(Q contact material only)
ABOUT THIS SERIES
On the following pages, you will find successively :
- model structure of switches
- options in the same order as in above chart
Dimensions : first dimensions are in mm while inches are shown as bracketed numbers.
NOTICE : please note that not all combinations of above numbers are available. Refer to the following pages for further
information.
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APEM
300 & 400 series
Miniature pushbutton switches
Terminations
• Solder lug or straight PC
terminals
• Epoxy sealed terminals standard
Normally open with overtravel: 301
Normaly Open
Normaly Open
PC terminals
301CQE
Normaly Open
301CBE
Normaly Open
Normally open no overtravel: 302
302ZQE
302ZBE
PC terminals
302CQE
302CBE
305ZQE
305ZBE
PC terminals
305CQE
305CBE
APEM
Ø9.40
(Ø.370)
0.38
(.015)
Actuation force: 8.5oz. `4oz.
5.13
(.202)
Ø4.06
(Ø.160)
Normaly Open
Normaly Open
Normaly Open
Normaly Open
Normally open with greater overtravel: 305
Solder lug terminals
Total travel: 2.7 (.110)
Over travel: 0.51 (.020)
1/4-40 UNS
5.61 8.10 6.35 3.72
(.221) (.319) (.250) (.146)
301ZBE
Solder lug terminals
Ø4.06
(Ø.160)
5.61 10.90 6.35 4.52
(.221) (.429) (.250) (.178)
301ZQE
1.17
(.046)
Actuation force: 10oz. `4oz.
www.apem.com
5.13
(.202)
Ø4.06
(Ø.160)
Normaly Open
Normaly Open
Ø9.40
(Ø.370)
0.38
(.015)
Total travel: 1.52 (.060)
Normaly Open
Normaly Open
1/4-40 UNS
Total travel: 2.7 (.110)
Over travel: 1.20 (.075)
Actuation force: 8oz. `4oz.
5.61 10.90 6.35 4.52
(.221) (.429) (.250) (.178)
Solder lug terminals
6.86
(.271)
2.03
(.080)
1.27
(.050)
2.54
(.100)
4.80
(.189)
2.54
(.100)
C
1.02
(.040)
5.59
(.221)
Z
1/4-40 UNS
Ø9.40
(Ø.370)
0.38
(.015)
5.13
(.202)
B
300 & 400 series
Miniature pushbutton switches
Normally open with sealed contact area: 306
306ZQE
Normaly Open
PC terminals
306CQE
Normaly Open
306CBE
Normaly Open
Ø9.40
(Ø.370)
20.00
(.787)
Normaly Open
5/16-24 UNF
Total travel: 8.74 (.310)
Over travel: 6.35 (.250)
Actuation force at full travel: 9oz.
5.61
(.221)
306ZBE
0.38
(.015)
5.13
(.202)
Normally open snap-action mechanism:400
MOM -
6.35 5.28
(.250) (.208)
OFF
OFF
Pretravel: 0.66 (.026)
Actuation travel: 2.60 (.106)
Total traval: 3.48 (.137)
Over travel: 0.79 (.031)
Actuation force: 22oz.
Ø9.53
(Ø.375)
0.38
(.015)
5.13
(.202)
For complete part number, and full list of options see part number breakdown at the beginning of this section
10.13
(.399)
Dim B
301
2.74 (.108)
23.60 (.929)
302
2.16 (.085)
20.75 (.817)
305
2.74 (.108)
23.60 (.929)
401
3.68 (.145)
29.00 (1.142)
402
3.68 (.145)
29.00 (1.142)
Right angle terminal with bracket
Model no.
Dim B
Dim C
A
17.40
(.685)
Dim A
10.13
(.399)
Model no.
7.16
(.282)
15.62
(.615)
B
Ø1.91
(Ø.075)
Dim D
301
11.15 (.439) 13.97(.550) 16.51 (.650)
302
8.30 (.327) 11.43 (.450) 13.97(.550)
305
11.15 (.439) 13.97(.550) 16.51 (.650)
401
16.59 (.653) 19.05 (.750) 21.59 (.850)
402
16.59 (.653) 19.05 (.750) 21.59 (.850)
2.29
(.090)
5.08
(.200)
Snap-in bezel
C
D
6.15
(.242)
9.40
(.370)
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B
4.70
(.185)
-
11.91
(.469)
402
ON
1/4-40 UNS
5.60
(.221)
401
Ø4.06
(Ø.160)
3.18 9.40
(.125) (.370)
B
6.35 8.92
(.250) (.351)
Solder lug terminals
Ø4.06
(Ø.160)
1.17
(.046)
5.08
(.200)
0.41
(.016)
C
D
APEM
300 & 400 series
Miniature pushbutton switches
T1 option with 15/32 bushing
305
6.35 (.250)
9.25
(.365)
6.35 (.250)
A
301
Ø8.40
(.330 DIA)
16.65
(.655)
Dim A
Ø11.90-32UNS
(15/32-32UNS)
Ø9.40
(.370 DIA)
0.40
(.015)
5.60
(.220)
Model no.
EPOXY
5.30
(.209)
T1 option availible only for 301 and 305 models
Option S long actuator
Ø4.06
(Ø.160)
6.81
(.269)
5.28
(.209)
4.78
(.188)
6.10
(.241)
4.78
(.188)
Ø4.06
(Ø.160)
Ø4.06
(Ø.160)
1/4-40 NS
1/4-40 NS
1/4-40 NS
302
301 & 305
401 & 402
Panel cut-outs
R0.13
(R.005)
MAX.
1/4” threaded
bushings
13.00
(.512)
Ø11.89
(Ø.468)
6.35
( .251)
15.24
(.600)
15/32” threaded
bushings
Snap-in bezel
UL option
UL For power circuits - coin silver
RATING: 0.5 Amps at 125 VAC (75% power factor).
Underwriter Laboratories file no. E66367. Note - applicable only to terminations with coin
silver contacts (Q option).
APEM
www.apem.com
B
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