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2 | M-Series Circuit Breaker - General Specifications

Environmental

Physical

Mechanical

Electrical

CURRENT TOLERANCE

(AMPS)

(%)

0.10 - 20.0

±25

20.1 - 50.0

±35

Designed in accordance with requirements of specification

MIL PRF-55629 & MIL-STD-202G as follows:

*Manufacturer reserves the right to change product specification without prior notice.

RESISTANCE PER POLE VALUES

from Line to Load Terminals

(Values Based on Series Trip Circuit Breaker)

Maximum Voltage

125/250 VAC 50/60 Hz, 80 VDC

(See Rating Tables.)

Current Ratings

Standard current coils: 0.100,

0.250, 0.500, 0.750, 1.00 thru 15.0

in 1 amp increments, 18.0, 20.0,

25.0, 30.0. Other ratings available

- see Ordering Scheme.

Auxiliary Switch Rating SPDT; 7A 250VAC, 7A (Res)

28VDC, 4A (Ind.) 28VDC, 0.25A

80VDC (Res) (silver contacts),

0.1A 125VAC (gold contacts).

Insulation Resistance

Minimum of 100 Megohms at 500

VDC.

Dielectric Strength

UL, CSA 1500V, 50/60 Hz for one

minute between all electrically

isolated terminals. M-Series

Circuit Breakers comply with the

8mm spacing and 3750 V 50/60Hz

dielectric requirements from

hazardous voltage to operator

accessible surfaces, per

Publications IEC 380, 435, 950,

EN 60950 and VDE 0805.

Resistance, Impedance Values from Line to Load Terminal

- based on Series Trip Circuit

Breaker.

Endurance

10,000 ON-OFF operations @ 6

per minute with rated Current and

Voltage.

Trip Free

All M-Series Circuit Breakers will

trip on overload, even when

actuator is forcibly held in the ON

position.

Trip Indication

The actuator moves positively

to the OFF position when an

overload causes the circuit

breaker to trip.

Shock

Withstands 100 Gs, 6ms, sawtooth

while carrying rated current per

Method 213, Cond. I. Instantaneous

curves tested at 80% of rated

current.

Vibration

Withstands 0.060” excursion

from 10-55 Hz, and 10 Gs 55-500

Hz, at rated current per Method

204C, Test Condition A.

Instantaneous curves tested at

80% of rated current.

Moisture Resistance

Method 106D, i.e., ten 24-hour

cycles @ + 25°C to +65°C, 80-

98% RH.

Salt Spray

Method 101, Condition A (90-95%

RH @ 5% NaCl Solution, 96 hrs).

Thermal Shock

Method 107D, Condition A (Five

cycles @ -55°C to +25°C to +85°C

to +25°C).

Operating Temperature -40° C to +85° C

Chemical Resistance

Only the outside surfaces of the

case and the handles may be

cleaned with detergents or

alcohol. Organic (hydrocarbon

based) solvents are not

recommended because they

attack plastics. Caution should

be taken when solvents are used

to clean and remove flux from

terminals. Lubricants should not

be introduced into the handle/

bushing openings

Number of Poles

1 or 2

Internal Circuit Configs.

Series with or without

Auxiliary Switch.

Switch Only with or without

Auxiliary Switch.

Weight

Approximately 30 grams/pole

(Approximately 1.07 ounces/pole)

Standard Colors

See Ordering Scheme.a

Pulse Tolerance Curves