Type 4230-T (UL 489)


Single pole and multipole thermal-magnetic miniature circuit breakers (MCBs) in accordance with EN 60947-2 and UL 489 for DIN rail mounting, with toggle actuation, visual status indication and high rupture capacity. A positively trip-free snap action mechanism ensures reliable switching behaviour. A range of trip characteristics and add-on modules allow a great variety of applications.

The 4230-T is a thermal-magnetic MCB in a standard enclosure in accordance with DIN 43880. Its conformity with the relevant standards IEC 60947-2 and UL 489 makes the 4230-T ideally suitable for worldwide use.
Due to its high rupture capacity of 63 A, the 4230-T is suitable for use as »Supplementary Protector«. Later product extensions by add-on modules such as an auxiliary contact module or a working current module offer high flexibility for the user. In addition, the device features reliable switching behaviour through a snap action  mechanism and it is positively trip-free.

Approvals and standards

  • IEC/EN 60947-2
  • UL 489

Technical Data

Voltage rating

IEC/EN 60947-2
1...63 A:
            1P (AC 240 V); 2P, 3P, 4P (AC 415 V)
            1P (DC 80 V); 2P in series (DC 125 V)

UL 489
1A…32 A:
            1P (AC 277 V); 2P, 3P (AC 480Y/277 V)
1 A…63 A:
            1P (DC 60 V); 2P in series (DC 125 V)

Number of poles double pole
single pole
three pole
Mounting method rail mounting
Terminal design screw terminals
Actuation toggle/baton
Auxiliary contacts with auxiliary contacts
Water splash protection without water splash protection
Illumination without illumination
Typical life Mechanically 20,000 cycles


Order number Description

Auxiliary switch, approval according to UL 489


Error indication module, approval according to UL 489


Operating current module, approval according to UL 489


  • Automation
  • Lighting technology
  • Mechanical engineering
  • Pharmaceutical & Food
  • Telecom & Datacom


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