http://airpax.sensata.com/
IELR Series - Operating Characteristics 156
http://airpax.sensata.com/
IELR Series - Specifications
155
IELR Rail-Mount
Series Trip
The most popular configuration for magnetic protectors is the
series trip where the sensing coil and contacts are in series with
the load being protected. The handle position conveniently
indicates circuit status. In addition to providing conventional
overcurrent protection, it’s simultaneously used as an on-off
switch.
Switch Only
In the event that over-current protection is not desired, the coil
mechanism can be deleted, providing an excellent low cost,
single or multi-pole power switch.
Insulation Resistance
100 megohm minimum at 500Vdc between all electrically isolated
terminals.
Dielectric Strength
3750Vac (3750V~) shall withstand AC voltages 50/60Hz for 60
seconds between all electrically isolated terminals.
Endurance
Circuit breakers shall operate a minimum of 10,000 operations;
6,000 with rated current and voltage and 4,000 with no load.
Operating Temperature
–40°C to +85°C.
IEC 144 Classification
Type handle spacings–IP40. Terminals–IP00.
Moisture Resistance
10 days, 95 percent relative humidity at 40°C in accordance with
IEC68-2-3, test C.
Salt Spray
Five percent solution at 35°C in accordance with IEC68-2-11, test
K, 48 hours.
Shock
50g, 11m sec, half sine with rated current, except no current with
handle down. Instantaneous units use 80 percent rated current.
Test in accordance with IEC68-2-27, test E
a
. This assumes that
adequate end stops are used to prevent longitudinal movement
of the circuit protector.
Vibration
4g, 5–500Hz (maximum double amplitude displacement 1.5mm)
with rated current except no current with handle down.
Instantaneous units use 80 percent rated current, in accordance
with IEC68-2-6, test F, method A, one hour per plane. This
assumes that adequate end stops will be used to prevent
longitudinal movement of the circuit protector.
LINE
LOAD
t=f (I)
Three Pole Schematic Diagram
Series
Switch Only
IELR SPECIFICATIONS IELR OPERATING CHARACTERISTICS
Inrush Pulse Tolerance
Pulse tolerance is defined as a single pulse of half sine
wave 50/60Hz peak current amplitude of 8 milliseconds
duration that will not trip the circuit breaker.
PULSE TOLERANCES
Delay Pulse Tolerance
61, 62, 63 (.1 to 70 amps) 12 times (approx.) rated current
61F, 62F, 63F (.1 to 25 amps) 20 times (approx.) rated current
61F, 62F, 63F (25.1 to 70 amps) 18 times (approx.) rated current
PERCENTAGE OF RATED CURRENT VS TRIP TIME IN SECONDS AT +25°C
Delay 100% 125% (Note A) 150% 200% 400% 600% 800% 1000%
41 No Trip May trip .5 to 8 .15 to 1.9 .02 to 4 .006 to .25 .004 to .1 .004 to .05
42 No Trip May trip 5 to 70 2.2 to 25 .40 to 5 .012 to 2 .006 to .2 .006 to .15
43 No Trip May trip 35 to 350 12 to 120 1.5 to 20 .012 to 2.2 .01 to .22 .01 to .1
49 No Trip May trip .100 max. .050 max. .020 max. .020 max. .020 max. .020 max.
51 No Trip .5 to 6.5 .3 to 3 .1 to 1.2 .031 to .5 .011 to .25 .004 to .1 .004 to .08
52 No Trip 2 to 60 1.8 to 30 1 to 10 .15 to 2 .04 to 1 .008 to .5 .006 to .1
53 No Trip 80 to 700 40 to 400 15 to 150 2 to 20 .23 to 9 .018 to .55 .012 to .2
59 No Trip .120 max. .100 max. .050 max. .022 max. .017 max. .017 max. .017 max.
61 No Trip .7 to 12 .35 to 7 .130 to 3 .030 to 1 .015 to .3 .01 to .15 .008 to .1
62 No Trip 10 to 120 6 to 60 2 to 20 .2 to 3 .02 to 2 .015 to .8 .01 to .25
63 No Trip 50 to 700 30 to 400 10 to 150 1.5 to 20 .4 to 10 .013 to .85 .013 to .5
69 No Trip .120 max. .100 max. .050 max. .022 max. .017 max. .017 max. .017 max.
71 No Trip .44 to 10 .3 to 7 .1 to 3 .03 to 1 .012 to .3 .004 to .15 .004 to .1
72 No Trip 1.8 to 100 1.7 to 60 1 to 20 .15 to 3 .04 to 2 .008 to .79 .006 to .28
73 No Trip 50 to 600 30 to 400 10 to 150 1.8 to 20 .22 to 10 .18 to .88 .011 to .5
79 No Trip .120 max. .100 max. .050 max. .023 max. .016 max. .015 max. .015 max.
Notes: All trip times and trip currents are specified with the protector mounted in the normal vertical position at ambient temperature of 25 C.
Protectors do not carry current prior to application of overload.
A: 135% for delays 71, 72, 73 and 79.
APL/UPL - NOMINAL DCR / IMPEDANCE
Current
Ratings
(Amps)
Resistance (ohms) Impedance (ohms) Impedance (ohms)
DC Delays AC, 50/60Hz Delays AC, 400Hz Delays
51, 52, 53, 59 61, 62, 63, 69 41, 42, 43, 49
0.20
45.8
28.5 71.94
1.0
1.38
1.10 2.85
5.0
.371
.29 .76
10.0
.055
.051 .12
15.0
.017
.016 .032
20.0
.006
.006 .010
30.0
.003
.004 .006
50.0
.0019
.0018 .0019
60.0
.00157
.00134 —
70.0
.00147
.00133 —
Notes: DCR and impedance based on 100% rated current applied and
stabilized for a minimum of one hour. Tolerance .05-2.5 amperes ± 20%; 2.6-20
amperes ± 25%; 21-70 amperes ± 50%. Consult factory for special values and
for coil impedance of delays not shown.
