> 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

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

***

### 3. Residual Current Detection Characteristics

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

**Operating Current**

| #   | Operating Current          | PIN 6 (X6) @BRCS01C-U5 | PIN 6 (X30) @BRCS01C-U6 |
| --- | -------------------------- | ---------------------- | ----------------------- |
| 401 | Smooth DC                  | 4.0\~6.0 mA            | 4.0\~6.0 mA             |
| 402 | DC rectified from 2 phases | 4.0\~7.0 mA            | 4.0\~7.0 mA             |
| 403 | DC rectified from 3 phases | 4.0\~6.2 mA            | 4.0\~6.2 mA             |
| 404 | Sinewave AC                | -                      | 22.0\~28.0 mA           |
| 405 | A0 pulsating DC            | -                      | 10.5\~42.0 mA           |
| 406 | A90 pulsating DC           | -                      | 7.5\~42.0 mA            |
| 407 | A135 pulsating DC          | -                      | 3.3\~42.0 mA            |

**Operating Time**

| #   | Response time                    | PIN 6 (X6) @BRCS01C-U5 | PIN 6 (X30) @BRCS01C-U6 |
| --- | -------------------------------- | ---------------------- | ----------------------- |
| 501 | Smooth DC 6mA                    | ≤ 500 ms               | ≤ 500 ms                |
| 502 | Smooth DC 60mA                   | ≤ 200 ms               | ≤ 200 ms                |
| 503 | Smooth DC 200mA                  | ≤ 70 ms                | ≤ 70 ms                 |
| 504 | Smooth DC 300mA                  | -                      | ≤ 20 ms                 |
| 505 | DC rectified from 2 phases 60mA  | ≤ 200 ms               | ≤ 200 ms                |
| 506 | DC rectified from 2 phases 200mA | ≤ 70 ms                | ≤ 70 ms                 |
| 507 | DC rectified from 2 phases 300mA | -                      | ≤ 20 ms                 |
| 508 | DC rectified from 3 phases 60mA  | ≤ 200 ms               | ≤ 200 ms                |
| 509 | DC rectified from 3 phases 200mA | ≤ 70 ms                | ≤ 70 ms                 |
| 510 | DC rectified from 3 phases 300mA | -                      | ≤ 20 ms                 |
| 511 | AC 30mA                          | > 10000 ms             | ≤ 80 ms                 |
| 512 | AC 60mA                          | > 300 ms               | ≤ 60 ms                 |
| 513 | AC 150mA                         | > 80 ms                | ≤ 20 ms                 |
| 514 | AC 5A                            | > 80 ms                | ≤ 20 ms                 |

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

**Operating Current**

| #   | Operating Current | PIN 2 (X20) @BRCS01C-U5/U6 |
| --- | ----------------- | -------------------------- |
| 601 | 60Hz sinewave AC  | 15.0\~20.0 mA              |
| 602 | 150Hz sinewave AC | 15.0\~34.5 mA              |
| 603 | 400Hz sinewave AC | 15.0\~69.6 mA              |
| 604 | Smooth DC         | 20.0\~56.0 mA              |

**Operating Time**

| #   | Response time                    | PIN 2 (X20) @BRCS01C-U5/U6 |
| --- | -------------------------------- | -------------------------- |
| 701 | 20mA AC residual current (60Hz)  | ≤ 500 ms                   |
| 702 | 100mA AC residual current (60Hz) | ≤ 20 ms                    |
| 703 | 264mA AC residual current (60Hz) | ≤ 15 ms                    |
| 704 | 56mA smooth DC residual current  | ≤ 40 ms                    |
| 705 | 100mA smooth DC residual current | ≤ 20 ms                    |

***

### 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%2F1UhcVhTFCnqw6fjaZDWn%2Fimage.png?alt=media&amp;token=abffdd56-e22a-487d-8970-fcd5801e34fc" 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%2FfaL2HNlW7SefIHKFyIMP%2Fimage.png?alt=media&amp;token=9a07f98c-b81a-4f69-97d0-671aec849fc3" 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%2Fmbj0U6BJiMjOy4q0MQkH%2Fimage.png?alt=media&amp;token=b37490b0-2718-44ec-b705-6857868eb27a" 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%**.

#### **Figures**

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{% column %}

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2F18TAja60S3T4HpAbm8yu%2Fimage.png?alt=media&amp;token=71302da5-a062-48ce-8e09-06d3069ee23c" alt=""><figcaption></figcaption></figure>
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{% column %}
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%.
  {% endcolumn %}
  {% endcolumns %}

***

### 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%2FVj6qN7YA5TZyt8iqwXz8%2Fimage.png?alt=media&amp;token=e6871dda-07f7-4922-a997-a8b6762a4149" alt=""><figcaption></figcaption></figure>

| Model             | Pin 1 | Pin 2                          | Pin 3 | Pin 4 | Pin 5 | Pin 6                     |
| ----------------- | ----- | ------------------------------ | ----- | ----- | ----- | ------------------------- |
| **BRCS01C-U5-**\* | 5V DC | AC & DC fault (UL2231(CCID20)) | GND   | CAL   | Test  | DC fault (IEC 62955)      |
| **BRCS01C-U6-**\* | 5V DC | AC & DC fault (UL2231(CCID20)) | GND   | CAL   | Test  | AC & DC fault (IEC 62752) |

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2Fvn0IVTuLvSKAtqJWCZAS%2Fimage.png?alt=media&amp;token=0b6e9ff0-c9e8-409a-9b94-1191f646e39a" alt=""><figcaption></figcaption></figure>

***

### 6. Ordering information

| # | Order Number      | Description                                                                                                                              |
| - | ----------------- | ---------------------------------------------------------------------------------------------------------------------------------------- |
| 1 | **BRCS01C-U5-H1** | <p><strong>BRCS01C Residual Current Sensor, 5V DC Interface, Flexible</strong><br>UL2231-2(CCID20) & IEC62955, 1P+N(80A) / 3P+N(40A)</p> |
| 2 | **BRCS01C-U6-H1** | <p><strong>BRCS01C Residual Current Sensor, 5V DC Interface, Flexible</strong><br>UL2231-2(CCID20) & IEC62752, 1P+N(80A) / 3P+N(40A)</p> |
| 3 | **BCHY6HY6-N030** | **300mm cable with 2×6PIN HY2.0 Connectors** <sup>1) 2)</sup>                                                                            |

> *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.