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Product Detailed Parameters
- Description：CURR SENSE XFMR 400:5 FOOTED
- Series：CT
- Mfr：Littelfuse Inc.
- Package：Bulk
- Frequency Range：-
- Type：Non-Invasive (Solid Core)
- Inductance：-
- ET (Volt-Time)：-
- Current Ratio：400:05:00
- DC Resistance (DCR)：-
- Ratings：-
- Mounting Type：-
- Size / Dimension：-
- Height - Seated (Max)：-
- Termination Style：Terminal Block
- Turns Ratio - Primary:Secondary：-
- Current Rating (Amps)：400 A
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Overview
The Littelfuse CT-0400-F30 is an industrial current transformer designed for accurate current sensing in electrical systems. It features a 400:5 turns ratio, enabling the measurement of primary currents up to 400 Amperes with a secondary output of 5 Amperes. The device incorporates a 3-inch (76.2 mm) window aperture to accommodate conductors. It operates at a voltage rating of 120V AC and is engineered for use within control circuits rated at 24V AC.
Feature Summary
- Provides precise current sensing through a fixed 400:5 transformation ratio
- Features a large 3-inch window aperture for easy conductor installation
- Designed for robust operation in industrial control environments
Applications
- Industrial current monitoring and protection circuits
- Control circuit integration for electric heating elements
- Air conditioning system load management
- Sequential load ordering applications
Procurement Notes
Verify that the specific application requires a 400:5 ratio and a 3-inch window size. Confirm compatibility with 120V AC systems and 24V AC control circuit requirements. Ensure the mounting style matches the footed design specifications provided in the official datasheet before procurement.
Selection Notes
Select this component when high-current measurement up to 400A is required without direct shunt usage. The 3-inch window accommodates larger busbars or cables. Consider the 400:5 ratio for standard ammeter interfaces. Verify space constraints allow for the physical dimensions of the footed housing.
Part Context
This part belongs to the Littelfuse CT Series of current transformers. These components are specialized for industrial instrumentation, offering isolation between high-voltage primary circuits and low-voltage secondary sensing equipment. The series supports various ratios and window sizes for diverse electrical configurations.
Replacement Considerations
Consult official Littelfuse documentation for cross-reference data. No substitute part numbers are confirmed in the provided source material. Verify technical equivalence if considering alternative manufacturers.
