300 & 400 series
Miniature pushbutton switches
Distinctive features and specifications
K Dry circuit through power ratings .
K Compact size.
K 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
• 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
250,000
3A 125VAC or 28VDC
MATERIALS
10,000
1A 125VAC or 28 VDC
0.4VA max. at 20V
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
