CURRENT TRANSFORMER (ABB CT1M-2 400) 400/5A
Valid Article
OC subscriptions: included in supply or field order tools (e.g. UniField)
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SC subscriptions: included in supply or field tools
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OC validations: approved for procurement and use by an OC for international or local orders specifying context and activity in Medical Standard Lists (MSL)
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CURRENT TRANSFORMER (ABB CT1M-2 400) 400/5A
Form
Current transformer for accurate metering and monitoring applications in low-voltage electrical installations, designed for 400 A primary current and 5 A secondary output with class 0.5 precision.
- technology: solid-core (through-primary) current transformer with fixed ratio 400/5 A
- accuracy class: 0.5
- rated primary current: 400 A
- rated secondary current: 5 A
- maximum primary conductor size: cable Ø 21 mm or busbar 20 × 10 mm
- mounting type: through-core for direct busbar or cable insertion
- operating frequency: 50 / 60 Hz
- insulation level: 0.72 kV rated
- protection degree: IP20
- standard compliance: IEC 61869-2, IEC 61010-1
- dimensions: 45 × 65 × 40 mm
- weight: 0.33 kg
Per piece
Fit
compatible with ABB and third-party meters using 5 A input
suitable for 400 A three-phase or single-phase networks up to 690 V AC
mounts directly on busbar or cable inside switchboards and power panels
optional accessories: DIN-rail adapter and fixing bracket for panel integration
designed for metering, monitoring, and energy-management systems in commercial and industrial installations
Function
Reduces primary current (up to 400 A) to a proportional 5 A secondary signal for safe connection to measuring instruments.
Ensures accurate metering performance within class 0.5 limits for billing and energy monitoring.
Simplifies installation by allowing direct conductor passage through the transformer core.
Compact and robust design ensures long-term stability and reliable operation in electrical distribution panels.