Dimensions Guide
Three Times the Life —
Three Times the Value
The performance of safety switches is important
to the safe and protable operation of many
industrial settings. In addition, requirements from
organizations such as OSHA have increased the
use of safety switches in many commercial and
industrial facilities.
The useful life of a safety switch is less than two
years based on NEMA
®
KS-1 life test requirements,
in lockout/tag out applications where a switch
is operated just once per hour, 24 hours a day,
seven days a week. For switches in these high-use
applications, durability is key.
Square D safety switches provide signicantly
higher levels of mechanical endurance than NEMA
KS-1 require. This translates to improved reliability
in a production environment. In fact, the standard
for the design life of Square D F-Series safety
switches is a minimum of three times the NEMA
requirement. No competitor comes close to the
performance offered by Square D safety switches.
Performance
Designed for the
Best Performance
A key performance benet of the Square D safety
switch is its ability to break load. A locked motor can
draw six to eight times motor full-load current. In an
emergency situation, it’s important to have a switch
with enhanced load break capability. A key element
of Square D safety switches is their blade and jaw
construction designs built to easily manage heavy
motor loads and arc interruptions.
3
(1)
Life determination based on 50,000 operations for Square D F-Series 30 A and 15,000 operations for
competition. Actual number of operations will vary based upon electrical load, duty cycle, and environmental
conditions.
(2)
Does not include cost of lost productivity. Switch cost replacement: labor = 2 hour @ $45/hour cost of
switch @ $100. Maximum usable life of switch assumed to be 20 years.
Potential Cost Avoidance Due to Square D Switch Life
Operations
of switch/
8-hour shift
Operations
per year in 24/7
environment
Life of
Square D switch
in years
(1)
Life of
competitive
switch in years
(1)
Cost avoidance
by using
Square D
(2)
1
1,095 45.7 13.7 $190
2
2,190 22.8 6.8 $380
3
3,285 15.2 4.6 $570
4
4,380 11.4 3.4 $760
5
5,475 9.1 2.7 $950