Issue:
100A, Heavy Duty, F-Series Safety Switches number of switching operations.
Product Line:
Safety Switch
Resolution:
For Safety Switches, the standard for design and testing of the number of switching operations is governed by UL98 and NEMA KS-1.There are two separate tests: (1) Endurance Test, and (2) Horsepower-overload test. The below table shows the minimum number of operations required (OFF to ON to OFF) by UL and NEMA. For the endurance test, however, Square D 100A F-Series Safety Switches exceed the UL and NEMA requirements by more than 3 times the total (see below table):
* Endurance test performed at switch rated load current
** Horsepower test - make/break motor inrush/locked rotor current at rated HP
Number of switching operations for other Heavy Duty Safety Switches:
For 30-60A series F Heavy Duty safety switches, see FA99746
For 200A series F Heavy Duty safety switches, see FA99791
For 400A series E Heavy Duty safety switches, see FA99792
For 600A series E Heavy Duty safety switches, see FA99819
For 800A series E Heavy Duty safety switches, see FA99821
For 1200A series E Heavy Duty safety switches, see FA99822
100A, Heavy Duty, F-Series Safety Switches number of switching operations.
Product Line:
Safety Switch
Resolution:
For Safety Switches, the standard for design and testing of the number of switching operations is governed by UL98 and NEMA KS-1.There are two separate tests: (1) Endurance Test, and (2) Horsepower-overload test. The below table shows the minimum number of operations required (OFF to ON to OFF) by UL and NEMA. For the endurance test, however, Square D 100A F-Series Safety Switches exceed the UL and NEMA requirements by more than 3 times the total (see below table):
100A, Square D Heavy Duty Safety Switches (F-series)
| Endurance Test - Number of Operations | HP Test - Number of Operations | |||
| Test Stds | Rated Load* | No Load | Total (Load + No Load) | at rated HP** |
| UL | 6000 | 4000 | 10000 | 50 |
| NEMA | 7000 | 7000 | 14000 | 50 |
| Square D | 7000 | 43000 | 50000 | 50 |
** Horsepower test - make/break motor inrush/locked rotor current at rated HP
Number of switching operations for other Heavy Duty Safety Switches:
For 30-60A series F Heavy Duty safety switches, see FA99746
For 200A series F Heavy Duty safety switches, see FA99791
For 400A series E Heavy Duty safety switches, see FA99792
For 600A series E Heavy Duty safety switches, see FA99819
For 800A series E Heavy Duty safety switches, see FA99821
For 1200A series E Heavy Duty safety switches, see FA99822
Released for:Schneider Electric USA
