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Series E90SUC – Miniature circuit breakers for DC circuit

  • General
  • Technical Table
  • Documentation

The E90SUC miniature circuit breakers are designed for application in DC circuits, with rated voltage up to 250V (1 pole), 500V (2-poles) up to 1000V (4-poles).

The miniature circuit breakers for DC circuit are equipped with a special magnet, which is able to force the arc to the arc chute and extinguish the arc into a very short time. The magnet requires a dedicated verse of connection.

Tripping characteristics B and C; when using in DC, the magnetic tripping current is  40% higher than AC.

The E90SUC miniature circuit breakers for DC circuit is used in traction plants, UPS circuits, Energy generating and Photovoltaic.

Thermal setting (In) (A)
0.5-63
Rated voltage AC (Un) (V)
230/400 250/500/880 (For 4P execution open circuit voltage Uco = 1000V)
Minimum operating voltage UB min (V)
12
Tripping characteristics
B-C
Mechanical/electrical endurance
20000/10000
Tropicalisation acc.to IEC 60068-2
95%RH at 55°C
Terminal capacity flexible/rigid cable (mm2)
25-35
Poles
1, 2, 4
Weight (g/pole)
125
Thermal operating limit
(1.13 - 1.45) x In
Magnetic operating
B: (3-5)xIn C: (5-10)xIn
Standards/Marking
EN/IEC 60898-2, DIN VDE 0641

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