OPERATING CHARACTERISTICS

Inrush Pulse Tolerance

The following table provides a comparison of inrush

pulse tolerance with and without the inertial delay

feature for each of the 50/60Hz delays. Pulse

tolerance is defined as a single pulse of half sine

wave peak current amplitude of 8 milliseconds

duration that will not trip the circuit breaker. The

table at left provides a guide to determine if the

inertia delay feature is required. Consult factory for

further assistance.

TYPICAL RESISTANCE / IMPEDANCE

Current Ratings

(Amps)

Impedance

DC

(ohms)

AC, 50/60Hz

(ohms)

AC, 400Hz

(ohms)

51, 52, 53, 59

61, 62, 63, 69

41, 42, 43, 49

0.200

45.8

28.5

71.94

1.00

1.38

1.10

2.85

2.00

0.371

0.29

0.76

5.00

0.055

0.051

0.12

10.0

0.017

0.016

0.032

20.0

0.006

0.006

0.010

30.0

0.003

0.004

0.006

50.0

0.0019

0.0018

—

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%, 21-50 amperes ± 50%. Consult factory for special values and for coil

impedance of delays not shown.

PERCENTAGE OF RATED CURRENT VS TRIP TIME IN SECONDS

Delay

100%

125%

150%

200%

400%

600%

800%

1000%

41

No Trip

May Trip

.500 to 8.0

.150 to 1.9

.020 to .40

.006 to .25

.004 to .1

.004 to .05

42

No Trip

May Trip

5 to 70

2.2 to 25

.40 to 5.0

.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

.500 to 6.5

.300 to 3.0

.100 to 1.2

.031 to .500

.011 to .25

.004 to .1

.004 to .08

52*

No Trip

2 to 60

1.8 to 30

1 to 10

.15 to 2.0

.015 to 1

.008 to .5

.006 to .1

53*

No Trip

80 to 700

40 to 400

15 to 150

2 to 20

.015 to 9

.015 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

.700 to 12

.35 to 7.0

.130 to 3.0

.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 3.0

.015 to 2

.015 to .8

.01 to .25

63*

No Trip

50 to 700

30 to 400

10 to 150

1.5 to 20

.015 to 10

.013 to .85

.013 to .5

64

No Trip

.7 to 12

.35 to 7

.13 to 3

.030 to 1

.017 to .3

.01 to .16

.008 to .1

65

No Trip

10 to 120

6 to 60

2 to 20

.2 to 3

.02 to 2

.017 to .76

.01 to. 6

66

No Trip

50 to 700

30 to 400

10 to 150

1.5 to 20

.4 to 10

.014 to 5

.014 to 3

69*

No Trip

.120 Max

.100 Max

.050 Max

.022 Max

.017 Max

.017 Max

.017 Max

71**

No Trip

.440 to 10

.300 to 7

.100 to 3.0

.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

.015 to 2

.008 to .79

.006 to .28

73**

No Trip

50 to 600

30 to 400

10 to 150

1.8 to 20

.015 to 10

.015 to .88

.011 to .50

79**

No Trip

.120 Max

.100 Max

.050 Max

.023 Max

.016 Max

.015 Max

.015 Max

*CEG type units are available only with 51, 52, ,53 and 59 delays LEG type units are available only with 61, 62, 63 and 69 delays

**135% minimum trip point for delays 71, 72, 73 and 79

INRUSH PULSE TOLERANCE

Delay

Pulse Tolerance

61, 62, 63, 71, 72, 73

10 times rated current (approx)

61F, 62F, 63F, 71F, 72F, 73F

12 times rated current (approx)

64, 65, 66

25 times rated current (approx)

IAG Series - Operating Characteristics

110