Type 483

~ 55 mm
Typ 483 von E-T-A: Einpoliger, thermischer Schutzschalter mit Gewindehalsbefestigung und Druck/Zug-Betätigung.


Single pole, miniaturised, aircraft style thermal circuit breaker with tease-free, trip-free, snap action mechanism and push/pull on/off manual actuation (M-type TO CBE to EN 60934). An indicator band on the push button clearly shows the tripped/off position. Threadneck panel mounted, available in metric and US (MS 3320) configurations. Advanced two-chamber design contributes to fail-safe operation. Temperature compensated from -55° to +125 °C, with optional auxiliary contacts, and fully approved for use on a wide range of aircraft and equipment. Full specification ensures suitability for the most demanding applications.

For three pole version see type 583.

Technical Data

Voltage rating
  • AC 115 V (400 Hz)
  • DC 28 V
    higher voltage ratings upon request
Current ratings from 1 A up to 35 A  
Number of poles single pole
Mounting method threadneck
Terminal design screw terminals
Actuation manual release
push button
Auxiliary contacts with auxiliary contacts
without auxiliary contacts
Water splash protection with water splash protection
without water splash protection
Illumination without illumination
Typical life 20,000 operations mechanical or

10,000 operations at 1 x IN (<= 25 A)

5,000 operations at 1 x IN (30 + 35 A)
Interrupting capacity Icn AC 115 V (400 Hz):

<= 4 A: 1,000 A

5 A: 2,000 A

7,5...35 A: 2 500 A

DC 28V:

1...25 A: 6,000 A

30 + 35 A: 4,000 A
Certificates LN 29886, UL, VG 95345 part T06, MS 3320, QPL


Order number Description

splash cover black with O-ring


splash cover transparent with O-ring


splash cover black with O-ring,

nickel plated nut


splash cover black with O-ring,

matt black finish nut


actuator extension


identification collar


lock out ring


  • Aerospace
  • Automobiles
  • Commercial Vehicles
  • Minus DC 28 V
  • Minus DC 48 V
  • Minus DC 72 V
  • Telecom & Datacom