The CTT0450 series of toroidal, panel mounted, solid-core current transformers offers highly accurate step-down transformation of the AC primary current with minimal phase shift to a level appropriate for micro-processor based circuits. These solid-core current transformers are suitable for installation in harsh operating environments with wide temperature extremes and high non-condensing humidity. Able to sustain operation during over current surges, these current transformers are suitable for in-door AC current measurement applications.

The current transformer features;

• Over current measurement capability.
• Broad frequency response range.
• A rugged design suitable for harsh environmental operating conditions.
• The secondary output can be configured either mV or mA.
• UL 2808 Certification

Model	Rated Primary Current	Secondary Output	Accuracy Class
CTT0450	5A to 500A	AC current option: Winding ratio options: 1:1000, 1:2000, 1:3000 or 1:5000	0.1, 0.2, 0.5 (IEC 60044-1)
		AC voltage option: Any value between 0.333VAC and 7.07VAC

Specifications:

• Input Frequency: 50 to 400HZ
• Operating Voltage: 600 Vac
• Operating temperature: -40ºC to +85ºC
• Wire Leads: 610mm (24in), AWM/ UL 1015 #22AWG, twisted pair, 600V
• CE Compliant
• RoHS Compliant

Physical Specifications:

• Opening: 45mm (1.77″)

Download CTT0450 Data Sheet (pdf 318kb)

Other Standard Sizes – Single Phase:

• CTT0150 standard models – 15.0mm (0.59in) window, UL Certified
• CTT0200 standard models – 20.0mm (0.79in) window, UL Certified
• CTT0350 standard models – 35.0mm (1.38in) window, UL Certified
• CTT0550 standard models – 55.0mm (2.17in) window, UL Certified
• CTT0720 standard models – 72.0mm (2.83in) window, UL Certified

Standard Sizes – Three Phase:

• TA7161 standard models – 10.0mm (0.39in) window
• TA7261 standard models – 20.0mm (0.79in) window
• TA7361 standard models – 20.0mm (0.79in) window
• TA7761 standard models – 30.0mm (1.18in) window

Standard Sizes – Three Phase – DIN Rail Mounted:

• TA7661 standard models – 20.0mm (0.79in) window