Section#1... 7270 & 7271 Series


Single Phase, Toggle or Pushbutton

Features
 Trip Free Operation, Snap-Acting Thermal Element, High Interrupting Capacity
Lightweight, Small Size, Current ratings (3 to 35 Amps), MIL-C-5809 Qualified

Overview
The Klixon® 7270 / 7271 series circuit breakers were designed to utilize less space behind the panel while protecting wire and cable in aircraft and ground support equipment on either 120 VAC, 400 Hz or 30 VDC systems. The units are available with neck mounting (7270-1 and 7271-8) or standard cover plate (7270-7 and 7271-3). Inherently resistant to shock and vibration, the Klixon® disc element is capable of calibration within in close tolerances throughout the service life of the breaker.

Section#2... 7270 & 7271 Series

Calibration: 3 to 35 amps (Typical*)

Temp
°C		 Min. Ult.
Trip		 Max. Ult.
Trip		 Trip Time - Seconds
200% 500% 1000%
+25 105% 138% 15 - 65 2 - 10 1.4
-40 125% 165% 15 - 65 2 - 10 1.4
+70 70% 125% 15 - 65 2 - 10 1.4
*The above calibration chart is representative of a standard commercial device. TI offers specific variants with similar performance dependant on military or customer specifications.

Section#3... 7270 & 7271 Series

Performance

Vibration*................ 10 G min, 50-500 Hz
Mechanical Shock...... 30 G
Acceleration.............. 10 G
Weight...................... 7270 - 39 grams max.
7271 - 39 grams max.
*Other vibration levels available

Interrupting Capacity
  4000 amps at 30 VDC
  3500 amps at 120 VAC, 400 Hz

Endurance
   5000 cycles    120 VAC. 400 Hz, Inductive
   5000 cycles 120 VAC. 400 Hz, Resistive
   5000 cycles 30 VDC, Inductive
   2500 cycles 30 VDC, Resistive
   5000 cycles Mechanical, No Load

Section#4... 7270 & 7271 Series

TI To Mil Spec Numbers

TI

 MS

Number

 Number
7270-1-3 n/a
7270-1-5 MS 24509-A-5
7270-1-7½ MS 24509-A-7½
7270-1-10 MS 24509-A-10
7270-1-15 MS 24509-A-15
7270-1-20 n/a
7270-1-25 n/a
7270-1-30 n/a
7270-1-35 n/a
TI MS
Number Number
7271-3-3 n/a
7271-3-5 MS 24510-B-5
7271-3-7½ MS 24510-B-7½
7271-3-10 MS 24510-B-10
7271-3-15 MS 24510-B-15
7271-3-20 n/a
7271-3-25 n/a
7271-3-30 n/a
7271-3-35 n/a
TI MS
Number Number
7270-7-3 n/a
7270-7-5 MS 24509-B-5
7270-7-7 MS 24509-B-7½
7270-7-10 MS 24509-B-10
7270-7-15 MS 24509-B-15
7270-7-20 n/a
7270-7-25 n/a
7270-7-30 n/a
7270-7-35 n/a
TI MS
Number Number
7271-8-3 n/a
7271-8-5 MS 24510-A-5
7271-8-7½ MS 24510-A-7½
7271-8-10 MS 24510-A-10
7271-8-15 MS 24510-A-15
7271-8-20 n/a
7271-8-25 n/a
7271-8-30 n/a
7271-8-35 n/a

Section#5... 7270 Series


Section#6... 7271 Series

 

 Section#7... 7270 & 7271 Series



Nominal dimensions provided for reference purposes.