Overview
The Instrument Transformers 50:5A current transformer is a precision metering instrument designed for industrial electrical applications. This CT provides a 50:5A turns ratio with primary current capacity of 50 amps and secondary output of 5 amps, enabling safe measurement of high-current circuits through standard low-current instruments. Rated for 600V AC maximum system voltage, this transformer delivers repeatable accuracy across the 50–400 Hz operating frequency range.
Key Features
- 50:5A current transformation ratio for accurate metering and load monitoring
- 600V AC insulation rating with 10 kV BIL (Basic Impulse Level) for enhanced durability
- Class 2 accuracy classification per ANSI/IEC standards for reliable measurement
- Operates across 50–400 Hz frequency range for global industrial compatibility
- Compact, durable construction suitable for panel, cabinet, or outdoor mounted installations
- Window-type design for flexible conductor pass-through and easy retrofit applications
Technical Specifications
- Primary Current: 50A
- Secondary Current: 5A (nominal)
- Turns Ratio: 50:5
- System Voltage Rating: 600V AC
- Basic Impulse Level (BIL): 10 kV
- Accuracy Class: Class 2
- Frequency Range: 50–400 Hz
- Burden (VA): Designed per IEC 60044-1
- Connection Type: Screw terminal studs (No. 8–32 UNC)
- Applications: Metering and cross-current compensation
Typical Applications
Current transformers rated 50:5A are widely used in power monitoring, energy management, and protective relaying systems. Applications include:
- Panel-mounted metering for branch circuits and feeder monitoring
- Ammeter and wattmeter integration in electrical distribution systems
- Load profiling and demand-side management in commercial and industrial facilities
- Protection circuit feedback for motor controls and motor starters
- Building energy management systems (BEMS) and SCADA installations
Compatibility & Replacements
Compatible With
- Digital and analog ammeters rated for 5A secondary current
- Wattmeters and power analyzers with standard 5A inputs
- Protective relays and monitoring devices with CT inputs
- Energy meters and demand controllers
- Standard DIN-rail and panel-mounted instrument installations
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. This unit replaces other 50:5A Class 2 current transformers with matching dimensional and terminal specifications.
Works With
- Standard 5A metering circuits per ANSI C12.1 and IEC 60044-1
- Industrial energy management and SCADA platforms
- Power quality analyzers and harmonic monitors
- Building automation systems with analogue CT inputs
