Rail-Mount Magnetic Circuit Protectors
IELR Series
Introduction
Poles
Specifications
Operating Characteristics
Delay Curves
Approvals
Decision Tables
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IELR Series
Rail-Mount Hydraulic Magnetic Circuit Protectors
INTRODUCTION
Designed specifically for the 35mm symmetrical DIN rail, Airpax
IALHR, IULHR and IELHR series Rail-Mount Magnetic circuit
protectors offer the advantages of quick and easy mounting or
removal which results in efficient and economical wiring, while
conserving space.
These circuit protectors are available in 1, 2, 3 and 4 pole
models, with a choice of handle colors with on/off and
international I/O markings. These protectors comply with
UL and CSA standards and meet IEC and VDE spacing
requirements. Typical applications include computers and
peripherals, telecommunications, medical equipment, machine
tools and process control instrumentation. They provide
the reliable performance associated with magnetic circuit
protection.
Mounting - These circuit protectors are designed to mount
on standard 35mm DIN rails, such as 35x7.5 or 35x15 per DIN
EN50022. Other specialty rails are available from suppliers that
provide a means of mounting non DIN mount components by
means of special captive jam nuts.
161
IELR Series - Introduction
http://airpax.sensata.com
Single Pole
.236
[5.99]
1.929
[49.00]
.138
[3.51]
.689
[17.50]
DIM.ìAî
.183
[4.65]
.689
[17.50]
1.680
[42.67]
1.122
[28.50]
ON
I
1.437
[36.50]
OFF
O
1.417
[35.99]
3.622
[92.00]
2.500
[63.50]
2.059
[52.30]
MOUNTING CLIP
1.240
[31.50]
M5 SCREW
2 X 6-32 THREAD
M3 X 0.5-6H THREAD OPTIONAL
.142 [3.6] DEEP (TYP.)
Two Pole
.236
[5.99]
1.929
[49.00]
.138
[3.51]
.689
[17.50]
DIM.ìAî
.183
[4.65]
.689
[17.50]
1.680
[42.67]
1.122
[28.50]
1.417
[35.99]
ON
I
ON
I
1.437
[36.50]
2.500
[63.50]
OFF
O
OFF
O
3.622
[92.00]
2.059
[52.30]
ALL MULTI-POLE CONFIGURATIONS
USE TWO MOUNTING CLIPS
1.240
[31.50]
4 X 6-32 THREAD
M3 X 0.5-6H THREAD OPTIONAL
.142 [3.6] DEEP (TYP.)
.748
[19.00]
MULTI-POLE DIMENSIONS - DIM “A”
1 pole
2 pole
3 pole
4 pole
Note: Tolerance ± .015 [.38] unless noted.
Dimensions in brackets [ ] are millimeters.
.750 ± .02 [19.05 ± .5] max
1.515 [38.48] max
2.265 [57.53] max
3.015 [76.58] max
Note: Dimension “A” varies with # of poles
IELR Series - Poles
162
IELR (Rail-Mount)
IELR SPECIFICATIONS
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.
t=f (I)
Series
LINE
LOAD
Switch Only
Three Pole Schematic Diagram
163
IELR Series - Specifications
http://airpax.sensata.com
IELR OPERATING CHARACTERISTICS
APL/UPL - NOMINAL DCR / IMPEDANCE
Current
Ratings
(Amps)
0.20
1.0
5.0
10.0
15.0
20.0
30.0
50.0
60.0
70.0
Resistance (ohms)
DC Delays
51, 52, 53, 59
45.8
1.38
.371
.055
.017
.006
.003
.0019
.00157
.00147
Impedance (ohms)
AC, 50/60Hz Delays
61, 62, 63, 69
28.5
1.10
.29
.051
.016
.006
.004
.0018
.00134
.00133
Impedance (ohms)
AC, 400Hz Delays
41, 42, 43, 49
71.94
2.85
.76
.12
.032
.010
.006
.0019
—
—
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
61, 62, 63 (.1 to 70 amps)
61F, 62F, 63F (.1 to 25 amps)
61F, 62F, 63F (25.1 to 70 amps)
Pulse Tolerance
12 times (approx.) rated current
20 times (approx.) rated current
18 times (approx.) rated current
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.
PERCENTAGE OF RATED CURRENT VS TRIP TIME IN SECONDS AT +25°C
Delay
41
42
43
49
51
52
53
59
61
62
63
69
71
72
73
79
100%
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
No Trip
125% (Note A)
May trip
May trip
May trip
May trip
.5 to 6.5
2 to 60
80 to 700
.120 max.
.7 to 12
10 to 120
50 to 700
.120 max.
.44 to 10
1.8 to 100
50 to 600
.120 max.
150%
.5 to 8
5 to 70
35 to 350
.100 max.
.3 to 3
1.8 to 30
40 to 400
.100 max.
.35 to 7
6 to 60
30 to 400
.100 max.
.3 to 7
1.7 to 60
30 to 400
.100 max.
200%
.15 to 1.9
2.2 to 25
12 to 120
.050 max.
.1 to 1.2
1 to 10
15 to 150
.050 max.
.130 to 3
2 to 20
10 to 150
.050 max.
.1 to 3
1 to 20
10 to 150
.050 max.
400%
.02 to 4
.40 to 5
1.5 to 20
.020 max.
.031 to .5
.15 to 2
2 to 20
.022 max.
.030 to 1
.2 to 3
1.5 to 20
.022 max.
.03 to 1
.15 to 3
1.8 to 20
.023 max.
600%
.006 to .25
.012 to 2
.012 to 2.2
.020 max.
.011 to .25
.04 to 1
.015 to 9
.017 max.
.015 to .3
.02 to 2
.4 to 10
.017 max.
.012 to .3
.015 to 2
.015 to 10
.016 max.
800%
.004 to .1
.006 to .2
.01 to .22
.020 max.
.004 to .1
.008 to .5
.015 to .55
.017 max.
.01 to .15
.015 to .8
.013 to .85
.017 max.
.004 to .15
.008 to .79
.015 to .88
.015 max.
1000%
.004 to .05
.006 to .15
.01 to .1
.020 max.
.004 to .08
.006 to .1
.012 to .2
.017 max.
.008 to .1
.01 to .25
.013 to .5
.017 max.
.004 to .1
.006 to .28
.011 to .5
.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.
IELR Series - Operating Characteristics
164
IELR (Rail-Mount)
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