---
product_id: 79174570
title: "YSR21 Current Transformer 100/5a, 100a Ct for Ammeter"
brand: "yokins"
price: "A$23"
currency: AUD
in_stock: true
category: "Yokins"
url: https://www.desertcart.com.au/products/79174570-ysr21-current-transformer-100-5a-100a-ct-for-ammeter
store_origin: AU
region: Australia
---

# 100A primary rating 20mm inner diameter 1.0 accuracy class YSR21 Current Transformer 100/5a, 100a Ct for Ammeter

**Brand:** yokins
**Price:** A$23
**Availability:** ✅ In Stock

## Summary

> ⚡ Transform Your Measurements with Precision & Power!

## Quick Answers

- **What is this?** YSR21 Current Transformer 100/5a, 100a Ct for Ammeter by yokins
- **How much does it cost?** A$23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/79174570-ysr21-current-transformer-100-5a-100a-ct-for-ammeter)

## Best For

- yokins enthusiasts

## Why This Product

- Trusted yokins brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built for Endurance:** Handles continuous current up to 120% rated capacity, engineered for long-lasting stability.
- • **Compact & Robust Design:** Sleek 8x3x6 cm polycarbonate casing combines durability with space-saving convenience.
- • **Precision You Can Trust:** Accurate current measurement with 1.0 class compliance ensures your readings never miss the mark.
- • **Trusted Brand Reliability:** Crafted by YOKINS with premium CRGO core and copper for consistent, high-performance results.
- • **Industry-Standard Compliance:** IS 2705 certified, meeting rigorous quality and safety benchmarks for professional use.

## Overview

The YSR21 Current Transformer by YOKINS delivers precise current measurement with a 100A primary and 5A secondary rating. Featuring a 20mm inner diameter and a robust fire-retardant polycarbonate enclosure, it supports continuous current up to 120% of rated capacity. Certified to IS 2705 and accuracy class 1.0, this CT ensures reliable, industry-standard performance for professional ammeter applications.

## Description

Current transformers are basically used as it is not possible to use line current directly for measurement and relaying purpose due to its high value and insulation problem. It is widely known as ct.

## Features

- Designed for precise current measurement, the CT has a primary rating of 100A and a secondary rating of 5A, making it suitable for a variety of ammeter applications.
- Compliant with IS 2705, With a burden of 5VA, the CT operates efficiently, and its accuracy class of 1.0 complies with industry standards, ensuring reliable and precise current measurements.
- Featuring a 20mm ID and manufactured by YOKINS, a trusted brand, the CT meets high-quality standards and performance expectations. Can withstand continuous current upto 120% of the rated current
- Fabricated from high quality CRGO core and electrical grade copper which is enclosed in Rectangular fire retardant industrial grade polycarbonate Enclosure/casing, ensures consistent performance for decades. Our CTs are known for stability and durability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MZ6RM5T |
| Are batteries included? | No |
| Best Sellers Rank | #40,141 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #125 in Power Transformers (Industrial & Scientific) |
| Country of Origin | India |
| Customer Reviews | 4.4 4.4 out of 5 stars (11) |
| Date First Available | 6 January 2017 |
| Generic Name | Current Transformer |
| Item Dimensions LxWxH | 8 x 3 x 6 Centimeters |
| Item Height | 6 Centimeters |
| Item Weight | 510 g |
| Item Width | 3 Centimeters |
| Item model number | SR21 |
| Manufacturer | YOKINS, YOKINS INSTRUMENTS PVT. LTD. GALI NO. 2, KHASRA NO, 291, SHALIMAR VILLAGE INDL. AREA DELHI - 110088 Contact : 011 - 40159888 E-Mail : sales@yokins.com |
| Model number | SR21 |
| Net Quantity | 1 Piece |
| Number of Memory Sticks | 1 |
| Packer | YOKINS INSTRUMENTS PVT. LTD. GALI NO. 2, KHASRA NO, 291, SHALIMAR VILLAGE INDL. AREA DELHI - 110088 Contact : 011 - 40159888 E-Mail : sales@yokins.com |
| Product Dimensions | 8 x 3 x 6 cm; 510 g |

## Product Details

- **Brand:** Yokins
- **Current Rating:** 100 Amps
- **Power Source:** AC mains
- **Product Dimensions:** 80D x 30W x 60H Millimeters
- **Specification Met:** IS 2705

## Images

![YSR21 Current Transformer 100/5a, 100a Ct for Ammeter - Image 1](https://m.media-amazon.com/images/I/61rnO7bou-L.jpg)
![YSR21 Current Transformer 100/5a, 100a Ct for Ammeter - Image 2](https://m.media-amazon.com/images/I/71PuqhSPcFL.jpg)
![YSR21 Current Transformer 100/5a, 100a Ct for Ammeter - Image 3](https://m.media-amazon.com/images/I/71tl-50PmOL.jpg)
![YSR21 Current Transformer 100/5a, 100a Ct for Ammeter - Image 4](https://m.media-amazon.com/images/I/61xwn0f43ZL.jpg)
![YSR21 Current Transformer 100/5a, 100a Ct for Ammeter - Image 5](https://m.media-amazon.com/images/I/71GHAle97vL.jpg)

## Frequently Bought Together

- YOKINS Current Transformer 100/5A, 100A CT for Ammeter Model SR21 Polycarbonate encapsulated rectangular sleek design
- MULTISPAN 3 Phase Panel Meter

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-14*