Type: 4120


~ 57 mm
Typ 4120 von E-T-A: Einpoliger, thermischer Schutzschalter mit Gewindehalsbefestigung und Druck/Zug-Betätigung.

Single pole, miniaturised thermal circuit breaker with trip-free mechanism and push/pull on/off manual actuation (M-type TO CBE to EN 60934). Threadneck panel mounted, temperature-compensated, with optional auxiliary contacts. Fully approved for commercial aircraft and similar requirements.

Voltage rating
  • AC 115 V (400 Hz)
  • DC 28 V
Current ratings from 1 A until 25 A  (0.5 A upon request)
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

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

1...4 A: 1,000 A

5...25 A: 2,000 A

DC 28V:

1...25 A: 6,000 A
Certificates EN 2495, EN 3773, prEN 2995, MS 3320, QPL, VG 95345 T06, BWB, UL 1077


Order number Description

splash cover black with O-ring


splash cover transparent with O-ring


actuator extension


identification collar


lock out ring


  • Aerospace
  • Automobiles
  • Commercial Vehicles
  • Household, Hobby & Garden Equipment
  • Minus DC 48 V
  • Telecom & Datacom

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