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IER-3

IER-3

Protective current transformerfrom €88.80 incl. VAT

Delivery by Mon, 16/11/2026

Datasheet (PDF)

Product description

Article features

  • This protective current transformer is used for system protection in conjunction with the appropriate switching devices
  • Available in numerous protection classes
  • Sealable secondary terminal covers made of clear polycarbonate
  • Double secondary terminals on all versions for short-circuiting the secondary windings before opening the secondary circuit
Round conductor
Ø 30 mm
Primary rail
30 x 15 mm80 x 12 mm2 x 80 x 10 mm4 x 30 x 10 mm
Dimensions (W × H × D)
133 × 155 × 46 mm
Design
Protection current transformer
Secondary connection
Screw terminal
Touch protection
yes
Packaging (W × H × D)
145 × 165 × 50 mm
Rated current
250 – 2000 A
Instrument security factorFS 5

Conditions of use

Secondary current5A / 1A / 333mV
Nominal frequency50 - 60 Hz
max. permissible operating voltage720 V
Test voltage3 kV / 1 min
Thermal rated continuous currentIcth = 1,2 x Ipr
Thermal rated short-time withstand currentIth = 60 x Ipr
Rated impulse currentIdyn = 2,5 x Ith
Overcurrent rating (FS)n < 5
Insulation classE / F / H
Normative standardsIEC 61869 Teil 1 + 2 / DIN EN 42600
HousingGehäuse aus selbstverlöschendem PA66 V0 nach UL 94

Environmental conditions

Installation locationIndoor use
Ambient temperature (operation)-40°C ... +60°C
Ambient temperature (storage / transport)-40°C ... +60°C
Altitudeup to 1000 m

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