---
product_id: 111398780
title: "Split Core Hall Current Sensor HST21 300A/4V"
brand: "yhdc"
price: "¥7277"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/111398780-split-core-hall-current-sensor-hst21-300a-4v
store_origin: JP
region: Japan
---

# 300A current measurement range UL94-V0 flame resistance Wide operating temp -10~70°C Split Core Hall Current Sensor HST21 300A/4V

**Brand:** yhdc
**Price:** ¥7277
**Availability:** ✅ In Stock

## Summary

> ⚡ Measure with Confidence, Lead with Precision

## Quick Answers

- **What is this?** Split Core Hall Current Sensor HST21 300A/4V by yhdc
- **How much does it cost?** ¥7277 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/111398780-split-core-hall-current-sensor-hst21-300a-4v)

## Best For

- yhdc enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Flame-resistant UL94-V0 casing and wide temperature tolerance for harsh environments
- • **High Voltage Safety:** 2.5KV dielectric strength protects your system under stress
- • **Compact & Lightweight:** Only 72g, easy to integrate without bulk
- • **Speed Meets Efficiency:** Ultra-fast <3μs response time for real-time current monitoring
- • **Precision that Powers Your Projects:** 1% accuracy with <0.1% linearity ensures reliable data every time

## Overview

The Split Core Hall Current Sensor HST21 offers a robust 300A measurement range with 1% accuracy and ultra-fast response under 3 microseconds. Designed with UL94-V0 flame resistance and a wide operating temperature range (-10 to 70°C), it ensures durability and safety in demanding industrial environments. Its compact 72g form factor and high dielectric strength (2.5KV) make it an ideal choice for precise, reliable current sensing in professional applications.

## Description

Hall open loop current sensor  Model：HST21   Open loop, split core type, sub-plate installation. Detects DC, AC and pulse current.   Technical indicators:  Flame resistance：UL94-V0  Working temperature：-10 ~ + 70 ℃  Storage temperature: -40 ~ + 85 ℃Bandwidth：DC～25kHz  Dielectric strength：2,5KV 50Hz 1min  Rated input: ±200A  Input measured range: 300A  Rated output: ±4V  Accuracy: 1%  Linearity: <0.1%  Supply voltage(±5%) ±15V Current consumption: ±15mA  Load impedance: ≥10KΩ  Zero offset TA=25℃ ≤±15mV  Response time: ＜ 3μ s  Weight: 72g

## Features

- Flame resistance：UL94-V0
- Working temperature：-10 ~ + 70 ℃
- Storage temperature: -40 ~ + 85 ℃
- Bandwidth：DC～25kHz
- Dielectric strength：2,5KV 50Hz 1min
- Rated input: ±200A
- Input measured range: 300A
- Rated output: ±4V
- Accuracy: 1%
- Linearity: <0.1%
- Supply voltage(±5%) ±15V
- Current consumption: ±15mA

## Images

![Split Core Hall Current Sensor HST21 300A/4V - Image 1](https://m.media-amazon.com/images/I/31I0tn7vOVL.jpg)
![Split Core Hall Current Sensor HST21 300A/4V - Image 2](https://m.media-amazon.com/images/I/71FcYl2vITL.jpg)
![Split Core Hall Current Sensor HST21 300A/4V - Image 3](https://m.media-amazon.com/images/I/41hUnW2cK0L.jpg)
![Split Core Hall Current Sensor HST21 300A/4V - Image 4](https://m.media-amazon.com/images/I/41DFzDw9R6L.jpg)
![Split Core Hall Current Sensor HST21 300A/4V - Image 5](https://m.media-amazon.com/images/I/41LAZuSagxL.jpg)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-20*