HW1A-B1-B IDEC, HW1A-B1-B Datasheet - Page 21

• Manufacturer Part Number: HW1A-B1-B
• Description: PUSHBUTTON SWITCH
• Manufacturer: IDEC

Specifications of HW1A-B1-B

• Actuator / Cap Color: Black
• For Use With: YS Series IEC Contactors
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Electrical Life in Mixed AC3/AC4 Duty Applications
By calculation:
In a mixed AC3/AC4 application, electrical life can be calculated using the following formula:
L
P/100: ratio of switching off during starting or plug braking
www.idec.com
=
1+
Fig. 3 Utilization Category AC1
100
P
Millions
of Operating
Cycles
Breaking current Ic (A)
0.5
0.4
0.3
0.2
0.1
Ie = rated motor current
(AC4 from fig. 2)
10
A3
5
4
3
2
1
(
Switching a resistive circuit (cos ø
The breaking current in AC1, Ic, is equal to Ie. (le = rated operational current of the load)
A3
A4
IEC Contactors
1
-1
)
2
USA: (800) 262-IDEC or [phone], Canada: (888) 317-IDEC
3
4
L: Electrical life in mixed AC3/AC4 application
A3: Electrical life for breaking current equal to the rated current of the motor. (AC3 from Fig. 1)
A4: Electrical life for a breaking current during starting or plug braking equal to Ic = Kle, where:
5
0.95)
K 6
10
20
30
40
50
100
150
200
240
260
300
AC1 Ue < 440V
350
400 500
Specifications
D-21
D