Eaton CT-SP-4-400-5A Split Core CT - ANSI/IEEE C12.20
Part Number: CT-SP-4-400-5A
Quick Summary
The Eaton CT-SP-4-400-5A split-core current transformer measures current for metering and power management. This compact sensor helps retrofit existing systems without shutting down equipment, addressing a common project bottleneck. It carries RoHS compliance and ANSI/IEEE Std C12.20 certification, ensuring safe, standards-based performance in industrial environments. Designed for reliability, it supports accurate data capture for energy analytics and protection schemes. In practice, engineers gain faster commissioning, tighter monitoring, and a smaller footprint in crowded switchgear, enabling more effective demand management and utility reporting. By combining precise sensing with easy installation, the CT-SP-4-400-5A delivers business value through improved visibility and reduced operational risk.
Product Information
Extended Description
CT-SP-4-400-5A Eaton: Eaton CT-SP-4 series split-core current transformer, 400/5A, 0.5% accuracy, Input: 600V, 2, Operating: -10°C to 60°C, 5A,
Product Name
Eaton 5A split core current sensor
Catalog Number
CT-SP-4-400-5A
UPC
786685873459
Product Length/Depth
3.6 in
Product Height
3.82 in
Product Width
1.14 in
Product Weight
1.1 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
RoHS Compliant
Certifications
ANSI/IEEE Std C12.20
Catalog Notes
2.8 Burden VA ±0.5%
Special features
2.8 Burden VA ±0.5%
Operating Temperature
-10° to 60°C
Quantity
1
Current transformer type
Split Core
Application current (primary rating)
400A
Window size
1.30" x 1.70"
Output Current (Secondary)
5A
Output
5 A
Accuracy
0.50%
Input voltage
600 V
Number of wires
2
Series
CT-SP-4
Power Systems Experience Center Tour – Metering Focus
Eaton Specification Sheet - CT-SP-4-400-5A
5A split (M0) and solid (S0) core current transformers technical data
5A split (M0) and solid (S0) core current transformers technical data
Feature: Easy installation around live conductors without disconnecting equipment. Business Impact: Reduces downtime and labor costs during retrofits, accelerating project timelines. Application: Panel retrofits in manufacturing and facilities where interruptions are costly. Feature: 400 A primary, 5 A secondary with 0.50% accuracy. Business Impact: Delivers high-fidelity current measurement for accurate metering, energy management, and protective relays. Application: Metering loops and power quality monitoring across industrial lines. Feature: Low burden 2.8 VA and 600 V input rating. Business Impact: Ensures compatibility with load centers and meters while maintaining signal integrity. Application: Systems requiring precise sensing at moderate voltage levels. Feature: Wide operating temperature -10°C to 60°C. Business Impact: Maintains performance in harsh environments and exposed assemblies. Application: Outdoor substations and rugged plant floors. Feature: Compact dimensions (3.6 in L x 3.82 in H x 1.14 in W) and light 1.1 lb package. Business Impact: Simplifies installation in tight spaces. Application: Retrofit and space-constrained panel boards. Feature: RoHS compliant and ANSI/IEEE C12.20 certified. Business Impact: Demonstrates regulatory compliance and reliability. Application: Safety-conscious design for regulated facilities.
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FAQs
The CT-SP-4-400-5A uses a split-core design that allows you to open the sensor, place it around a conductor, and close it without disconnecting devices. This minimizes downtime during retrofits and enables rapid commissioning with the 400 A primary and 5 A secondary output. Ensure the window accommodates the conductor size and follow standard lockout/tagout procedures before installation.
With 0.50% accuracy, a 2.8 VA burden, and a 600 V rating, the CT-SP-4-400-5A provides precise current sensing essential for energy meters and power analytics. Its non-invasive installation supports retrofits in existing meters and panels, delivering reliable data for billing, demand metering, and efficiency optimization.
Yes. The CT-SP-4-400-5A is RoHS compliant and carries ANSI/IEEE Std C12.20 certification, ensuring regulatory alignment and safe operation in typical industrial environments. These certifications support compliance programs and customer acceptance in regulated facilities.
The device operates from -10°C to 60°C, enabling reliable performance in a wide range of industrial settings. Its compact form factor and robust construction make it suitable for panel boards, switchgear, and cabinets that experience ambient temperature variations and moderate humidity.
By enabling non-invasive retrofits with fast installation, the CT-SP-4-400-5A reduces commissioning time and downtime costs while improving measurement accuracy for meters and protection relays. This leads to more reliable energy data, better demand management, and faster payback through improved energy accounting and reduced maintenance bottlenecks.