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Product Detailed Parameters
- Description：CURR SENSE XFMR 100:1 5A IN-LINE
- Series：ZSCT
- Mfr：Littelfuse Inc.
- Package：Bulk
- Frequency Range：50Hz ~ 400Hz
- Type：Non-Invasive (Solid Core)
- Inductance：-
- ET (Volt-Time)：-
- Current Ratio：05:00.1
- DC Resistance (DCR)：-
- Ratings：-
- Mounting Type：Free Hanging (In-Line)
- Size / Dimension：2.888" L x 2.860" W (73.36mm x 72.64mm)
- Height - Seated (Max)：2.452" (62.28mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：100:01:00
- Current Rating (Amps)：5:00 AM
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Overview
The Littelfuse ZSCT5-31 is a current sense transformer designed for industrial applications. It features a primary current rating of 5 A and a turns ratio of 100:1. The device supports frequencies from 50 Hz to 400 Hz. It has a sensor hole size of 31 mm (1.24 inches). Accuracy class is specified as 3%. The unit utilizes a free-hanging or in-line mounting style.
Feature Summary
- Designed for detecting low levels of earth-leakage current when used with Littelfuse relays
- Compact construction suitable for panel mounting or in-line installation
- Operates within standard industrial frequency ranges
Applications
- Earth-leakage current detection systems
- Industrial relay protection circuits
- Current monitoring in power distribution panels
Procurement Notes
Verify the specific datasheet revision and accuracy class documentation before procurement. Confirm that the 3% accuracy requirement aligns with system design specifications. Ensure the 5 A primary current rating matches the circuit load. Check compatibility with associated Littelfuse relay models for proper integration into the safety circuit.
Selection Notes
Select this component for applications requiring precise earth-leakage detection in industrial environments. The 100:1 ratio provides adequate signal scaling for downstream sensing. Consider the 31 mm aperture size for conductor fitment. Verify frequency range compliance for 50/60 Hz or up to 400 Hz operations. Ensure mechanical mounting constraints allow for free-hanging or panel installation methods.
Part Context
The ZSCT5-31 belongs to the Littelfuse ZSCT series of current transformers. This series is engineered specifically for use with Littelfuse relays to detect low-level earth-leakage currents. The product line focuses on providing reliable current sensing solutions for industrial safety and control applications, ensuring accurate detection of fault conditions.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult Littelfuse official resources for cross-reference data.
