MPN

RS PRO Current Transformer 20 A 21 mm Bore

RS Stock No.:: 171-8858
Brand:: RS PRO

RS PRO Current Transformer 20 A 21 mm Bore

Bulk discount available

Subtotal (1 unit)*

£15.77

(exc. VAT)

£18.92

(inc. VAT)

FREE delivery for orders over £60.00

In Stock

82 unit(s) ready to ship
Plus 16 unit(s) ready to ship from another location
Plus 30 unit(s) shipping from 28 May 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 - 4	£15.77
5 - 9	£15.14
10 - 24	£14.50
25 - 49	£13.88
50 +	£13.24

*price indicative

RS Stock No.:: 171-8858
Brand:: RS PRO

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	RS PRO
	Product Type	Current Transformer
	Secondary Current	5A
	Terminal Type	Wire
	Primary Current	20A
	Minimum Operating Temperature	-5°C
	Maximum Operating Temperature	55°C
	Depth	40mm
	Standards/Approvals	IEC 60044-1, IEC 61010-2, IEC 61869-1, UL94V-0
	Width	62mm
	Mount Type	Busbar, Cable, Wall
	Maximum Operating Frequency	60Hz
	Minimum Operating Frequency	50Hz
	Bore Size	21mm

	Select all
	Brand RS PRO
	Product Type Current Transformer
	Secondary Current 5A
	Terminal Type Wire
	Primary Current 20A
	Minimum Operating Temperature -5°C
	Maximum Operating Temperature 55°C
	Depth 40mm
	Standards/Approvals IEC 60044-1, IEC 61010-2, IEC 61869-1, UL94V-0
	Width 62mm
	Mount Type Busbar, Cable, Wall
	Maximum Operating Frequency 60Hz
	Minimum Operating Frequency 50Hz
	Bore Size 21mm

COO (Country of Origin):: IN

RS PRO Current Transformers

The RS PRO current transformer is square type and encapsulated with polycarbonate. These metering CT's feature sealable terminal covers and the current ratio is 20:5. It is a surface mount device.

Features and Benefits

• Accuracy class 1

• Comprehensive class accuracy

• Cost-effective moulded case

• Operating temperature ranges between -5°C and 55°C

• Wire sealable terminal covers

Applications

• Commercial electric power distribution

• Electrical substations

Certifications

• IEC - 61010 - 2

• IEC 60044-1/IEC 61869-1

• IP20 rated

• UL94V-0