GFK-1504N
B-1
Relay Contact Ratings
Mechanical Rating
Relay contacts are rated for 10
7
operations.
Electrical Rating
The relay contacts used in VersaMax modules meet Underwriters Laboratories’
Pilot Duty Rating for Control Circuits. Contact life depends on type of load and
current, as summarized in the following table.
Operating
Voltage
Maximum Current for Load Type
Typical Contact
Life (operations)
Resistive
Inductive
†
24 to 125 V AC
24 to 125 V AC
24 to 125 V AC
24 to 125 V AC
2.0 A
–
1.5 A
0.8 A
0.35 A
1.00 A
0.20 A
0.10 A
300,000
100,000
500,000
1,000,000
250 V AC
250 V AC
250 V AC
250 V AC
2.0 A
–
1.0 A
0.6 A
0.15 A
1.00 A
–
–
180,000
30,000
500,000
1,000,000
5 to 31 V DC
5 to 31 V DC
5 to 31 V DC
5 to 31 V DC
2.0 A
–
1.1 A
0.7 A
0.70 A
2.00 A
0.25 A
0.10 A
200,000
50,000
500,000
1,000,000
32 to 125 V DC
0.2 A
not rated
300,000
†
Power Factor = 0.4 minimum for AC inductive loads
Time Constant – 7mS for DC inductive loads
Installing suitable suppression across inductive loads enhances reliability. For
DC, a free-wheeling diode provides suitable suppression. For AC, an R-C filter
can be used.
Appendix
B
