> For the complete documentation index, see [llms.txt](https://docs.bituo-technik.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bituo-technik.com/product-document/brcs-series/brcs01c-ul.md).

# BRCS01C - UL

## BRCS01C-U5/U6 - UL & IEC

{% hint style="info" %}
**Applies to:** BRCS01C-U5/U6 Residual Current Sensor (UL 2231-2 (CCID20) and IEC 62955 / IEC 62752) | **Last Updated:** 2026-09-28
{% endhint %}

### 1. Introduction

<div align="left"><figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FzpVrNfWylgzdex04LMqD%2Fimage.png?alt=media&amp;token=c23da17b-bd1c-4ac2-9bd7-c7d92dd74b5b" alt=""><figcaption></figcaption></figure></div>

The BRCS01C-U5/BRCS01C-U6 is an AC/DC residual current sensor with two separate fault signal outputs – one Pin conforming to UL2231-2 (CCID20) and the other Pin conforming to IEC 62955 or IEC 62752. It can be used for built-in residual current protection system at AC charging stations.

* Digital outputs of fault detection conforming to UL2231-2 (CCID20) and IEC 62955 / IEC 62752
* Cost-effective solution of residual current detection for mode-2/3 EVSE
* Fast response time facilitating a broad selection of switching devices
* Accurate measurement and optimization against nuisance tripping

***

### 2. Technical Data

<table><thead><tr><th width="79">#</th><th width="416">Technical Specification</th><th>BRCS01C-U5</th><th>BRCS01C-U6</th></tr></thead><tbody><tr><td>101</td><td>Rated current in monitoring circuit (1phase/3phase)</td><td>80A / 40A</td><td>80A / 40A</td></tr><tr><td>102</td><td>Rated frequency in monitoring circuit</td><td>60Hz</td><td>60Hz</td></tr><tr><td>103</td><td>Rated impulse withstand voltage in monitoring circuit</td><td>6kV</td><td>6kV</td></tr><tr><td>104</td><td>Over-voltage category in monitoring circuit</td><td>III</td><td>III</td></tr><tr><td>201</td><td>Rated operating voltage in control circuit, <span class="math">V_{cc}</span></td><td>5VDC ± 3%</td><td>5VDC ± 3%</td></tr><tr><td>202</td><td>Power consumption</td><td>&#x3C; 500mW</td><td>&#x3C; 500mW</td></tr><tr><td>203</td><td>Pin 1 – Vcc for 5V</td><td>+5VDC</td><td>+5VDC</td></tr><tr><td>204</td><td>Pin 2 – Fault signal: X20-UL2231 (CCID20)</td><td>Digital output</td><td>Digital output</td></tr><tr><td>205</td><td>Pin 3 – GND</td><td>GND</td><td>GND</td></tr><tr><td>206</td><td>Pin 4 – CAL (Calibration)</td><td>Digital input</td><td>Digital input</td></tr><tr><td>207</td><td>Pin 5 – Test signal</td><td>Digital input</td><td>Digital input</td></tr><tr><td>208</td><td>Pin 6 – Fault signal: X6-IEC62955 (RDC-MD) or X30-IEC62752 (IC-CPD)</td><td>Digital output (RDC-MD)</td><td>Digital output (IC-CPD)</td></tr><tr><td>301</td><td>Rated DC residual operating current <span class="math">I_{\Delta dc}</span> (IEC 62955)</td><td>6mA</td><td>6mA</td></tr><tr><td>302</td><td>Rated DC residual non-operating current <span class="math">I_{\Delta ndc}</span> (IEC 62955)</td><td>3mA</td><td>3mA</td></tr><tr><td>303</td><td>Rated AC residual operating current <span class="math">I_{\Delta n}</span> (UL2231-2)</td><td>20mA</td><td>20mA</td></tr><tr><td>304</td><td>Rated AC residual non-operating current <span class="math">I_{\Delta nc}</span> (UL2231-2)</td><td>15mA</td><td>15mA</td></tr><tr><td>305</td><td>Rated AC residual operating current <span class="math">I_{\Delta n}</span> (IEC 62752)</td><td>-</td><td>30mA</td></tr><tr><td>306</td><td>Rated AC residual non-operating current <span class="math">I_{\Delta nc}</span> (IEC 62752)</td><td>-</td><td>15mA</td></tr><tr><td>307</td><td>Electrical endurance</td><td>20,000</td><td>20,000</td></tr><tr><td>308</td><td>Rated operating temperature</td><td>-40~85 ℃</td><td>-40~85 ℃</td></tr><tr><td>309</td><td>Pollution degree</td><td>2</td><td>2</td></tr></tbody></table>

***

### 3. Residual Current Detection Characteristics

#### **PIN 6 (X6/X30 Output) - IEC 62955 / IEC 62752**

**Operating Current**

<table><thead><tr><th width="91.22216796875">#</th><th width="369.77783203125">Operating Current</th><th>PIN 6 (X6) @BRCS01C-U5</th><th>PIN 6 (X30) @BRCS01C-U6</th></tr></thead><tbody><tr><td>401</td><td>Smooth DC</td><td>4.0~6.0 mA</td><td>4.0~6.0 mA</td></tr><tr><td>402</td><td>DC rectified from 2 phases</td><td>4.0~7.0 mA</td><td>4.0~7.0 mA</td></tr><tr><td>403</td><td>DC rectified from 3 phases</td><td>4.0~6.2 mA</td><td>4.0~6.2 mA</td></tr><tr><td>404</td><td>Sinewave AC</td><td>-</td><td>22.0~28.0 mA</td></tr><tr><td>405</td><td>A0 pulsating DC</td><td>-</td><td>10.5~42.0 mA</td></tr><tr><td>406</td><td>A90 pulsating DC</td><td>-</td><td>7.5~42.0 mA</td></tr><tr><td>407</td><td>A135 pulsating DC</td><td>-</td><td>3.3~42.0 mA</td></tr></tbody></table>

**Operating Time**

<table><thead><tr><th width="103.4444580078125">#</th><th width="355.7777099609375">Response time</th><th>PIN 6 (X6) @BRCS01C-U5</th><th>PIN 6 (X30) @BRCS01C-U6</th></tr></thead><tbody><tr><td>501</td><td>Smooth DC 6mA</td><td>≤ 500 ms</td><td>≤ 500 ms</td></tr><tr><td>502</td><td>Smooth DC 60mA</td><td>≤ 200 ms</td><td>≤ 200 ms</td></tr><tr><td>503</td><td>Smooth DC 200mA</td><td>≤ 70 ms</td><td>≤ 70 ms</td></tr><tr><td>504</td><td>Smooth DC 300mA</td><td>-</td><td>≤ 20 ms</td></tr><tr><td>505</td><td>DC rectified from 2 phases 60mA</td><td>≤ 200 ms</td><td>≤ 200 ms</td></tr><tr><td>506</td><td>DC rectified from 2 phases 200mA</td><td>≤ 70 ms</td><td>≤ 70 ms</td></tr><tr><td>507</td><td>DC rectified from 2 phases 300mA</td><td>-</td><td>≤ 20 ms</td></tr><tr><td>508</td><td>DC rectified from 3 phases 60mA</td><td>≤ 200 ms</td><td>≤ 200 ms</td></tr><tr><td>509</td><td>DC rectified from 3 phases 200mA</td><td>≤ 70 ms</td><td>≤ 70 ms</td></tr><tr><td>510</td><td>DC rectified from 3 phases 300mA</td><td>-</td><td>≤ 20 ms</td></tr><tr><td>511</td><td>AC 30mA</td><td>> 10000 ms</td><td>≤ 80 ms</td></tr><tr><td>512</td><td>AC 60mA</td><td>> 300 ms</td><td>≤ 60 ms</td></tr><tr><td>513</td><td>AC 150mA</td><td>> 80 ms</td><td>≤ 20 ms</td></tr><tr><td>514</td><td>AC 5A</td><td>> 80 ms</td><td>≤ 20 ms</td></tr></tbody></table>

#### **PIN 2 (X20 Output) - UL2231-2 (CCID-20)**

**Operating Current**

<table><thead><tr><th width="107.5555419921875">#</th><th width="356.111083984375">Operating Current</th><th>PIN 2 (X20) @BRCS01C-U5/U6</th></tr></thead><tbody><tr><td>601</td><td>60Hz sinewave AC</td><td>15.0~20.0 mA</td></tr><tr><td>602</td><td>150Hz sinewave AC</td><td>15.0~34.5 mA</td></tr><tr><td>603</td><td>400Hz sinewave AC</td><td>15.0~69.6 mA</td></tr><tr><td>604</td><td>Smooth DC</td><td>20.0~56.0 mA</td></tr></tbody></table>

**Operating Time**

<table><thead><tr><th width="110.8887939453125">#</th><th width="354.111083984375">Response time</th><th>PIN 2 (X20) @BRCS01C-U5/U6</th></tr></thead><tbody><tr><td>701</td><td>20mA AC residual current (60Hz)</td><td>≤ 500 ms</td></tr><tr><td>702</td><td>100mA AC residual current (60Hz)</td><td>≤ 20 ms</td></tr><tr><td>703</td><td>264mA AC residual current (60Hz)</td><td>≤ 15 ms</td></tr><tr><td>704</td><td>56mA smooth DC residual current</td><td>≤ 40 ms</td></tr><tr><td>705</td><td>100mA smooth DC residual current</td><td>≤ 20 ms</td></tr></tbody></table>

***

### 4. Application Notes

**Typical application diagram**

<p align="center"><strong>BRCS01C-U5/U6 EV charging controller</strong></p>

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FsduWtmCLAk9AEoyXVTbT%2Fimage.png?alt=media&amp;token=d6e8eeb6-d3ad-429a-b236-da17e7d4cc31" alt=""><figcaption></figcaption></figure>

Additional information

* **Attention:** A direct connection of Pin 2/6 to switching devices such as relays or contactors - is **NOT allowed**. The trip signal of Pin 2/6 is suggested to be monitored by the charging controller MCU.

#### **Self-test time chart**

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2F5KdsAgkujwtnkvHGj2Z7%2Fimage.png?alt=media&amp;token=955f7d33-81e2-4dcf-b958-20535b1df9ea" alt=""><figcaption></figcaption></figure>

A self-test excluding offset calibration is activated if Pin 5 - Test is connected to a high level for a period **above 40ms**. *(Note:* $$t\_1$$ *is the response time for internally generated test current.)*

#### **Offset calibration time chart**

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FYFuhEuQARlAzxqxKlImL%2Fimage.png?alt=media&amp;token=0b7a70b2-bad8-43be-a4f8-e108cd86ed6f" alt=""><figcaption></figcaption></figure>

An offset calibration is activated if Pin 4 - CAL is connected to GND for a period between **50ms and 100ms**. An offset calibration can be activated at regular intervals (such as start-up) or after the occur of certain critical events (such as short circuit).

> ⚠️ **Attention**: During the offset calibration, **NO leakage current or any other current may flow through the device** and the relays/contactors must be open. Also, the power supply voltage at Pin 1 Vcc must be stay at **5VDC ± 3%**.

#### **Switching recovery level**

<div align="left"><figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FJBIEESTltfx8i82NSSHu%2Fimage.png?alt=media&amp;token=03410032-da37-4157-8563-8b5d2fa8a86e" alt=""><figcaption></figcaption></figure></div>

If the trip-level $$I\_{\Delta T}$$ is accomplished the output will change their state from low-level to high level. Depending on the existence of the residual current $$I\_{\Delta}$$, the output will remain in this state until $$I\_{\Delta}$$ falls below the threshold $$I\_{\Delta R}$$.

* **X20 Pin (CCID20):** Typical values of $$I\_{\Delta T}$$ DC 26mA & AC 17.5mA; Typical value of $$I\_{\Delta R}$$ is 75%.
* **X30 Pin (IEC 62752):** Typical values of $$I\_{\Delta T}$$ DC 5mA & AC 24mA; Typical value of $$I\_{\Delta R}$$ is 75%.
* **X6 Pin (IEC 62955):** Typical values of $$I\_{\Delta T}$$ DC 5mA; Typical value of $$I\_{\Delta R}$$ is 75%.

***

### 5. Mechanical outline

BRCS01C-U5 / BRCS01C-U6:

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FUmvtnlUDimGyqm8yK4Sp%2Fimage.png?alt=media&amp;token=b97e6451-1dde-4e0f-8cd7-8066b36d068f" alt=""><figcaption></figcaption></figure>

<table><thead><tr><th width="144.6666259765625">Model</th><th width="92.4444580078125">Pin 1</th><th width="111.3333740234375">Pin 2</th><th width="102.4444580078125">Pin 3</th><th width="95.77783203125">Pin 4</th><th width="85.77783203125">Pin 5</th><th width="118">Pin 6</th></tr></thead><tbody><tr><td><strong>BRCS01C-U5-</strong>*</td><td>5V DC</td><td>AC &#x26; DC fault (UL2231(CCID20))</td><td>GND</td><td>CAL</td><td>Test</td><td>DC fault (IEC 62955)</td></tr><tr><td><strong>BRCS01C-U6-</strong>*</td><td>5V DC</td><td>AC &#x26; DC fault (UL2231(CCID20))</td><td>GND</td><td>CAL</td><td>Test</td><td>AC &#x26; DC fault (IEC 62752)</td></tr></tbody></table>

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FtW0AXI5r1X6ZoLVhpSwl%2Fimage.png?alt=media&amp;token=4c2e7bbb-027e-4c3e-8feb-09d66c602da7" alt=""><figcaption></figcaption></figure>

***

### 6. Ordering information

<table><thead><tr><th width="86.4444580078125">#</th><th width="218.333251953125">Order Number</th><th>Description</th></tr></thead><tbody><tr><td>1</td><td><strong>BRCS01C-U5-H1</strong></td><td>BRCS01C Residual Current Sensor, 5V DC Interface, Flexible<br>UL2231-2(CCID20) &#x26; IEC62955, 1P+N(80A) / 3P+N(40A)</td></tr><tr><td>2</td><td><strong>BRCS01C-U6-H1</strong></td><td>BRCS01C Residual Current Sensor, 5V DC Interface, Flexible<br>UL2231-2(CCID20) &#x26; IEC62752, 1P+N(80A) / 3P+N(40A)</td></tr><tr><td>3</td><td><strong>BCHY6HY6-N030</strong></td><td>300mm cable with 2×6PIN HY2.0 Connectors <sup>1) 2)</sup></td></tr></tbody></table>

> *1) BM6B-PASS (JST, SMT), BM6B-PASK (JST, DIP), A2012WV-S-6P (CJT, SMT) or A2012WV-6P (CJT, DIP) can be used at the charging controller side.*\
> *2) Specific customization requirements can be provided upon request.*

***

### 7. Additional Notes

> 🛑 **ESD Warning**: The sensor is susceptible to be damaged from an ESD event and the personnel should be grounded when handling it.

* Do **NOT** allow strong static electricity near the sensor, because static electricity can cause damage to the ICs inside the sensor. Take static electricity precautions when handling.
* Do **NOT** drop the sensor or apply any other mechanical stress to the sensor, as such stresses may change performance characteristics.
* Please place the sensor with an appropriate distance from components that can generate high magnetic fields, such as relays or contactors, to ensure accurate residual current detection.