Eaton CT-SP-3135-400-5 5A split core current sensor - UL Recognized
Part Number: CT-SP-3135-400-5
Quick Summary
The Eaton CT-SP-3135-400-5 is a current sensor for panel metering and energy management. Engineers often face the challenge of accurate, non-invasive monitoring inside crowded panels and tight retrofits. This device carries CSA Certified and UL Recognized marks to support compliant, safe installations in North American facilities. With a 400A primary and a 5A secondary, it scales across circuits while preserving measurement fidelity. Its split-core design enables fast, one-person installation, reducing downtime and wiring complexity. The compact form and compatibility with Eaton’s CT-SP ecosystem simplify stocking and maintenance, delivering reliable energy data that feeds demand management, fault detection, and energy optimization initiatives.
Product Information
Extended Description
CT-SP-3135-400-5 Eaton: Split Core CT 400A, 1% ACCY, 3.10 x 3.50 inch window
Product Name
Eaton 5A split core current sensor
Catalog Number
CT-SP-3135-400-5
UPC
786689884895
Product Length/Depth
7 in
Product Height
1.25 in
Product Width
6.1 in
Product Weight
1.5 lb
Certifications
CSA Certified UL Recognized
Amperage Rating
400A
Quantity
1
Current transformer type
Split Core
Application current (primary rating)
400A
Output Current (Secondary)
5A
Power Systems Experience Center Tour – Metering Focus
5A split core current transformers (CT-SP) technical data
5A split core current transformers (CT-SP) technical data
Feature: 400A primary rating with a 5A secondary output. Business Impact: Direct compatibility with common metering interfaces reduces hardware count, simplifies calibration, and enhances measurement fidelity. Application: Ideal for panel metering on feeders and main circuits in commercial or industrial facilities. Feature: Split-core construction enables non-invasive installation. Business Impact: Minimizes downtime and enables rapid retrofit projects in crowded panels. Application: Quick deployments in existing electrical rooms without disconnecting conductors. Feature: CSA Certified and UL Recognized. Business Impact: Meets stringent safety standards and regulatory requirements, boosting reliability and reducing compliance risk. Application: North American installations in data centers, manufacturing floors, and utility rooms. Feature: Compact footprint with practical dimensions. Business Impact: Fits standard enclosures and minimizes space penalties during retrofits. Application: Installation around a single conductor in Eaton CT-SP family deployments. Feature: 5A secondary output supports straightforward integration. Business Impact: Simplifies wiring to meters, relays, or protection devices, speeding commissioning. Application: Metering modules and control relays in energy management systems with accurate current sensing. Long-tail keywords integrated: split-core current transformer, 400A current sensor, 5A CT secondary, panel metering sensor, non-invasive installation, CT-SP family, energy management sensor, Eaton current transformer.
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FAQs
CT-SP-3135-400-5 is designed for current monitoring in standard electrical panels that accept split-core current transformers. It features a 400A primary window and a 1% accuracy class, with a 3.10 x 3.50 inch opening. For installation, open the split core, clamp around a single conductor, close, and connect the 5A secondary to your metering or control input. This enables rapid retrofits in crowded or live panels with minimal service interruption.
Electrical specs include an amperage rating of 400A on the primary, 5A secondary output, and a split-core design for non-invasive measurement. The window size is 3.10 x 3.50 inches, and the overall form is 7 inches long, 6.1 inches wide, and 1.25 inches tall, with an approximate weight of 1.5 pounds. Certifications include CSA Certified and UL Recognized.
Yes. The CT-SP-3135-400-5 carries CSA Certified and UL Recognized marks, meeting established electrical safety and reliability requirements for North American installations. This compliance supports safer integration with meters, relays, and protection devices in commercial and industrial environments, reducing risk during commissioning and operation.
The current sensor measures 7 inches in length, 6.1 inches in width, and 1.25 inches in height, weighing about 1.5 pounds. The core window is 3.10 by 3.50 inches to accommodate a single conductor. Mounting is non-invasive via the split-core clamp, allowing quick insertion around the conductor without disconnecting power.
ROI comes from faster installations, reduced downtime, and reliable energy data for demand management and fault detection. The 400A/5A rating provides accurate measurements for main feeders, while the split-core design reduces wiring and labor costs during retrofits. Compatibility with Eaton meters and CT-SP family devices simplifies procurement and ongoing maintenance.