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Dielectric Strength

Circuit Breaker will withstand 1000 volts plus twice rated voltage 60 Hz AC for 60 seconds from terminal to terminal.

Voltage Ratings

On all types, voltages up to and including 160 volts DC.

Multi-pole units can be supplied for 125/250 volts Vdc. All units will be marked with the standard maximum voltage.

UL listed breakers will be labeled with the UL listed voltage.

DC Applications (typ)

A choice of delays is offered for DC applications. Delay 51 is a short delay for general purpose applications. Delay 52 is long enough to start certain

types of motors and most transformer and capacitor loads. Delay 53 is a long delay for special motor applications.

All trip curves and trip currents are specified with the breaker mounted in the normal vertical position at ambient temperature of +25°C. For test

and measurement purposes, the breakers should not carry current prior to application of overload for calibration test. For other than vertical mount

position, consult factory.

Percentage of Rated Current vs Trip Time in Seconds at +25°C

Delay

100%

125% 125% (Note A)

150%

200%

400%

600%

800%

1000%

51 & 51F

No Trip

.5 to 10

.25 to 3

.15 to 9

.05 to .3

.015 to .15

.01 to .09

.01 to .04

52 & 52F

No Trip

9 to 90

5 to 40

2 to 15

.5 to 3

.03 to 1

.01 to .28

.01 to .08

53 & 53F

No Trip

100 to 1000

50 to 400

22 to 150

4 to 25

.5 to 5

.010 to 2

.01 to .1

61 & 61F

No Trip

.4 to 10

.25 to 3

.13 to .9

.03 to .2

.015 to .15

.01 to .09

.008 to .045

62 & 62F

No Trip

9 to 95

5 to 40

2 to 15

.05 to 3

.03 to 1

.01 to .28

.008 to .08

63 & 63F

No Trip

100 to 1100

48 to 400

20 to 150

4 to 25

.5 to 6

.01 to 2

.008 to .1

Nominal DCR / Impedance

Current Ratings (Amps)

Resistance (ohms)

DC Delays

51, 52, 53

100

.000375

110

.000375

125

.000340

150

.000325

175

.000315

200

.000225

225

.000225

250

.000225

400

.000125

600

000083

800

.000063

1,000

.000050

1,200

.000042

Recomended Torque Specifications

Component

Torque (in-lbs)

10-32 Mounting Inserts

10 to 12

M5 Mounting Inserts

8 to 10

3/8-16 and M10 x 1.5 Captive Nuts

220 to 230

3/8-16 and M10 x 1.5 Studs

220 to 230

Solderless Connectors

180

Approximate Weight Per Pole

Pounds

Grams

2.25

1020

Inrush Pulse Tolerance

Delay

Pulse Tolerance

61, 62, 63

8 times rated current (approx)

61F, 62F, 63F

12 times rated current (approx)

Notes:

Resistance is plus or minus 50%.

If a metering shunt option is provided it will add the shunts

resistance to these values (i.e. A 400 Amp metering shunt would

add (R=V/I). 0000625 Ohms of resistance to the non-metering

shunt value of .000125 Ohms or .0001875 Ohms for a 400 Amp

unit with a metering shunt).

DC resistance values are based on measurements by the

voltmeter ammeter method. Rated current applied for one hour

and at a voltage not less than 20 volts.

Inrush Pulse Tolerance

The table shown 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.