Siemens Sentron Current transformer, 700:5A Part number 4NC5228-2FE21

Product Overview

The Siemens 4NC5228-2FE21 is a bushing-type current transformer from the SENTRON 4NC series. It is designed for high-precision measurement applications and has a primary rated current of 700 A with a secondary output of 5 A (700/5 ratio). The unit supports an apparent power rating of 5 VA and boasts an accuracy class of 0.2s, making it suitable for metering and monitoring in industrial power distribution systems.

Key Features

• Primary/secondary ratio: 700 A / 5 A
• Rated apparent power: 5 VA
• Accuracy class: 0.2s for high measurement precision
• Bushing-type design (push-through conductor opening) for compact installation
• Screw-type terminals for secondary connection and assured reliability
• Touch-protected enclosure (IP20) for safe handling in panel installations

Technical Specifications

• Product Family: SENTRON 4NC bushing-type current transformers
• Article Number: 4NC5228-2FE21
• Rated Primary Current (Ip): 700 A
• Rated Secondary Current (Is): 5 A
• Rated Apparent Output (S): 5 VA
• Accuracy Class: 0.2s
• Rated Insulation Voltage (Ui): 3 kV
• Operation Frequency: 50/60 Hz
• Protection Class: IP20
• Ambient Operating Temperature: –30 °C to +55 °C
• Bus Bar Opening (max): 30 mm diameter for the push-through conductor
• Width × Height × Depth (approx.): 60 mm × 78.5 mm × 65 mm

Compliance & Certifications

• Designed to meet IEC/EN standards for current transformers used in measurement and monitoring applications
• RoHS compliant; conforms to Siemens’ material and safety standards

Applications

Ideal for installation in electrical switchgear, metering boards and power-distribution cabinets where accurate current measurement is required for protection, monitoring or billing purposes. Commonly used in industrial plants, utilities and large-scale installations to sample high currents and feed secondary measurement or protection devices.