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Product Detailed Parameters
- Description：TAPE WOUND CT WITH 300/5A
- Series：TWCT
- Mfr：Selec Controls USA Inc.
- Package：Box
- Frequency Range：50Hz ~ 60Hz
- Type：Non-Invasive (Solid Core)
- Inductance：-
- ET (Volt-Time)：-
- Current Ratio：300:05:00
- DC Resistance (DCR)：-
- Ratings：-
- Mounting Type：Free Hanging (In-Line)
- Size / Dimension：3.937" L x 3.543" W (100.00mm x 90.00mm)
- Height - Seated (Max)：0.984" (25.00mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Current Rating (Amps)：-
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Overview
The TWCT-T-D55 is a tape-wound current transformer manufactured by Selec Controls USA Inc. It features a 300/5A ratio and an inner diameter of 55mm. The unit supports a rated burden of 5 VA with a Class 1 accuracy rating. Designed for free-hanging in-line installation, it operates at 50Hz to 60Hz frequencies. The thermal nominal continuous current is 120% of In, and the rated short-time current (Icth) specifications are defined within the broader TWCT series parameters.
Feature Summary
- Tape-wound core construction for stable magnetic performance
- Free-hanging in-line mounting configuration
- Class 1 accuracy for precise current sensing applications
Applications
- Industrial automation control systems
- Electrical metering circuits
- Power distribution monitoring
Procurement Notes
Verify the specific ordering code against manufacturer documentation to ensure correct burden and class ratings. Confirm physical dimensions match the 55mm inner diameter requirement for the intended busbar or cable passage. Cross-reference the frequency range with system operating conditions to guarantee compatibility.
Selection Notes
Select this model when a 300/5A transformation ratio is required for primary currents up to 300 Amperes. Ensure the application demands Class 1 accuracy and a 5 VA burden capacity. Verify that the 55mm aperture accommodates the conductor size. Consider the tape-wound design benefits for compact integration in panel-mounted setups.
Part Context
This component belongs to the TWCT series of current transformers from Selec Controls. The series offers various ratios and accuracies for industrial use. The TWCT-T-D55 variant specifically addresses medium-current sensing needs with a standardized 55mm opening, fitting into the broader portfolio of precision measurement devices.
Replacement Considerations
Consult official Selec documentation for direct substitutes within the RCT or TWCT families. Verify that alternative models maintain identical 300/5A ratios, 55mm apertures, and Class 1 accuracy to ensure functional equivalence without circuit redesign.
