Specifications are subject to change without notice.

X110

0180T

R

Electrical Characteristics

Features

insulating material meets

UL 94V-0 requirements

Pak available on most models

Applications

Almost anywhere there is a low voltage

power supply, up to 60V and a load to be

protected, including:

1 Hour (R1)

Max. Time

Tripped

Ihold

Itrip

Initial

Post-Trip

To Trip

Power

Resistance

Resistance

Dissipation

Model

Amperes

Ohms

Ohms

Amperes

Seconds

Watts

V max.

I max.

at 23°C

at 23°C

at 23°Cat 23°C

at 23°C

at 23°C

Volts

Amps

Hold

Trip

Min.

Max.

Max.

MF-RX110

60

40

1.10

2.20

0.15

0.25

0.38

5.5

8.2

1.50

MF-RX135

60

40

1.35

2.70

0.12

0.19

0.30

6.75

9.6

1.70

MF-RX160

60

40

1.60

3.20

0.09

0.14

0.22

8.0

11.4

1.90

MF-RX185

60

40

1.85

3.70

0.08

0.12

0.19

9.25

12.6

2.10

MF-RX250

60

40

2.50

5.00

0.05

0.08

0.13

12.5

15.6

2.50

MF-RX300

60

40

3.00

6.00

0.04

0.06

0.10

15.0

19.8

2.80

MF-RX375

60

40

3.75

7.50

0.03

0.05

0.08

18.75

24.0

3.20

Operating/Storage Temperature ........................-40°C to +85°C

Maximum Device Surface Temperature

in Tripped State ................................................125°C

Passive Aging......................................................+85°C, 1000 hours ......................................±5% typical resistance change

Humidity Aging....................................................+85°C, 85% R.H. 1000 hours......................±5% typical resistance change

Thermal Shock ....................................................+125°C to -55°C,10 times ..........................±10% typical resistance change

Solvent Resistance ............................................MIL-STD-202, Method 215 ........................No change

Vibration ..............................................................MIL-STD-883C, Method 2007.1, ................No change

Condition A

Environmental Characteristics

Test

Test Conditions

Accept/Reject Criteria

Visual/Mech. ......................................................Verify dimensions and materials..................Per MF physical description

Resistance ..........................................................In still air @ 23°C ........................................Rmin

≤ R ≤ Rmax

Time to Trip ........................................................5 times Ihold, Vmax, 23°C ..........................T

≤ max. time to trip (seconds)

Hold Current ......................................................30 min. at Ihold............................................No trip

Trip Cycle Life ....................................................Vmax, Imax, 100 cycles ..............................No arcing or burning

Trip Endurance....................................................Vmax, 48 hours ..........................................No arcing or burning

UL File Number ..................................................E 174545S

CSA File Number ................................................CA 110338

TÜV File Number ................................................R2057213

Test Procedures And Requirements For Model MF-RX Series

Thermal Derating Chart - Ihold / Itrip (Amps)

Ambient Operating Temperature

Model

-40˚C

-20˚C0˚C23˚C40˚C50˚C60˚C70˚C85˚C

MF-RX110

1.71 / 3.42

1.50 / 3.00

1.31 / 2.62

1.10 / 2.20

0.89 / 1.78

0.79 / 1.58

0.69 / 1.38

0.59 / 1.18

0.44 / 0.88

MF-RX135

2.09 / 4.18

1.84 / 3.68

1.61 / 3.22

1.35 / 2.70

1.09 / 2.18

0.97 / 1.94

0.85 / 1.70

0.73 / 1.46

0.54 / 1.08

MF-RX160

2.48 / 4.96

2.18 / 4.36

1.90 / 3.80

1.60 / 3.20

1.30 / 2.60

1.15 / 2.30

1.01 / 2.02

0.86 / 1.72

0.64 / 1.28

MF-RX185

2.87 / 5.74

2.52 / 5.04

2.20 / 4.40

1.85 / 3.70

1.50 / 3.00

1.33 / 2.66

1.17 / 2.34

1.00 / 2.00

0.74 / 1.48

MF-RX250

3.88 / 7.76

3.40 / 6.80

2.98 / 5.96

2.50 / 5.00

2.03 / 4.06

1.80 / 3.60

1.58 / 3.16

1.35 / 2.70

1.00 / 2.00

MF-RX300

4.65 / 9.30

4.08 / 8.16

3.57 / 7.14

3.00 / 6.00

2.43 / 4.86

2.16 / 4.32

1.89 / 3.78

1.62 / 3.24

1.20 / 2.40

MF-RX375

5.81 / 11.6

5.10 / 10.2

4.46 / 8.92

3.75 / 7.50

3.04 / 6.08

2.70 / 5.40

2.36 / 4.72

2.03 / 4.06

1.50 / 3.00