Application:The CTSA family of mini split-core current transformers offers fast and easy installation into existing AC electric power distribution systems where space is a premium. The split-core current transformers feature a high performance magnetic core in a small physical package, providing highly accurate AC current measurement. The robust packaging features a mechanical hinge for multiple open/ close actions, tight fitting of the mating core halves and secure closure of the current transformer after installation. This feature insures consistent and highly accurate AC current measurement performance over the life of the current transformer.

The robust CTSA split-core current transformer design, manufactured in an ISO9001 certified manufacturing facility, insures many years of defect free operation backed by a strong product warranty of 36 months.

Features:

• Primary Input Range:
  • Ferrite Core: 5A to 75A
  • Silicon Steel CRGO: 5A to 90A
• Secondary Output @ rated primary current:
  • mV: 0.250V, 0.333V, 0.500V, 0.666V, 1.000V, 2.000V, 3.530V, 5.000V
  • mA: (standard winding ratios):
  • 1:1000, 1:2000, 1:2500
  • 1:3000, 1:4000

Performance:

• Accuracy Class: 0.5, 1.0 (IEC 60044-1)
• Accuracy: < 1% error
• Phase Angle: < 60 minutes
• Linearity: ±1% from 5% to 130% of rated primary current

Typical Models (Ferrite Core)	Rated Primary Current (Ampere)	Accuracy Class
CTSA010-005A/ 0.333V or mA option	5A	0.5/ 1.0
CTSA010-020A/ 0.333V or mA option	20A	0.5/ 1.0
CTSA010-030A/ 0.333V or mA option	30A	0.5/ 1.0
CTSA010-050A/ 0.333V or mA option	50A	0.5/ 1.0
CTSA010-075A/ 0.333V or mA option	75A	0.5/ 1.0
Typical Models (Silicon Steel CRGO Core)	Rated Primary Current (Ampere)	Accuracy Class
CTSA010S-50A/ 0.333V or mA option	50A (Silicon steel core)	0.5/ 1.0
CTSA010S-90A/ 0.333V or mA option	100A (Silicon steel core)	0.5/ 1.0

Specifications:

• Input Frequency: 50 to 400 HZ
• Maximum Primary Voltage: 720 VAC
• Dielectric Withstand Voltage: 2,500V for 1 minute
• Dielectric Resistance: 100 MOhms @ 500 VDC
• Operating temperature: -15ºC to +60ºC
• Construction:
  • Opening: 10.2mm (0.40″)
  • Ferrite core material (Silicon steel CRGO optional)
  • Epoxy encapsulated
  • Case: Nylon UL flame retardant rating 94V-0
• Leads: 0.61m (2 ft.), UL 1015, twisted pair, 0.34mm² (22AWG)
• UL Certification E466650
• RoHS Compliant

Physical Specifications:

Dimension mm (in)
L	W	H	ID
26.0 (1.02″)	25.0 (0.98″)	39.5 (1.56″)	10.2 (0.40″)

Download CTSA010 Data Sheet (pdf 314kb)