A pluggable bushing current transformer for SENTRON 3NJ62/63 NH1 in-line switch disconnectors with fuses. The 250/1 A ratio with Class 0.5 accuracy meets legal-for-trade calibration requirements. Features a 15.2 mm bushing opening for 14 mm cables and a deeper 48 mm profile.

NH1 Pluggable CT Design

Designed as a direct plug-in accessory for NH1 fuse-type switch disconnectors. The 15.2 mm bushing opening accommodates cables up to 14 mm in diameter — optimized for installations with smaller conductor cross-sections in 250 A circuits. The deeper 48 mm profile provides additional internal clearance. No tools needed for installation or replacement.

Key Parameters

Application

Used in NH1 3NJ62/63 switch disconnector assemblies for billing-grade metering where 250 A circuits use smaller 14 mm cabling. The Class 0.5 accuracy with 1 A secondary and deeper 48 mm housing is well suited to retrofit installations with existing narrow-gauge wiring that still demands calibrated measurement.