> 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-iec.md).

# BRCS01C - IEC

## BRCS01C - IEC

{% hint style="info" %}
**Applies to:** BRCS01C AC/DC Residual Current Sensor (IEC version, Type A 30mA and DC 6mA (IEC 62752; IEC 62955) / DC 6mA (IEC 62955)) | **Last Updated:** 2026-09-28
{% endhint %}

### 1. Introduction

![](https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FTFOcTJp8l3cmvE2XUN52%2FBRCS01C.png?alt=media\&token=edb90b54-31fe-4c32-ae30-a797e7cf96cc)

The BRCS01C is an AC/DC residual current sensor with two separate fault signal outputs – one Pin for type-A 30mA + DC 6mA residual current detection (RDC-PD application) and the other Pin for DC 6mA residual current detection (RDC-MD application). It can be used for built-in residual current protection at AC charging system.

* 5V DC or 12V DC interfaces available to meet different design practices
* Two fault signal pins for solely DC 6mA and Type-A 30mA +DC 6mA alarming
* Cost-effective solution of built-in residual current device for AC EV charger
* Fast response time facilitating a broad selection of switching devices
* Compact design with 17mm through-hole for charging cable up to 3P+N 32A

***

### 2. Technical Data

<table><thead><tr><th width="58">#</th><th width="320">Technical Specification</th><th>BRCS01C-05-H1</th><th>BRCS01C-12-H1</th></tr></thead><tbody><tr><td>101</td><td>Rated operating voltage in monitoring circuit</td><td>230/400VAC</td><td>230/400VAC</td></tr><tr><td>102</td><td>Rated current in monitoring circuit</td><td>≤ 32A</td><td>≤ 32A</td></tr><tr><td>103</td><td>Poles in monitoring circuit</td><td>1P+N / 3P+N</td><td>1P+N / 3P+N</td></tr><tr><td>104</td><td>Frequency in monitoring circuit</td><td>50Hz</td><td>50Hz</td></tr><tr><td>105</td><td>Rated impulse withstand voltage in monitoring circuit</td><td>6kV</td><td>6kV</td></tr><tr><td>106</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>12VDC ± 20%</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</td><td>Vcc 5VDC</td><td>GND</td></tr><tr><td>204</td><td>Pin 2</td><td>AC &#x26; DC Trip</td><td>+12VDC</td></tr><tr><td>205</td><td>Pin 3</td><td>GND</td><td>Test</td></tr><tr><td>206</td><td>Pin 4</td><td>CAL</td><td>DC Trip</td></tr><tr><td>207</td><td>Pin 5</td><td>Test</td><td>AC &#x26; DC Trip</td></tr><tr><td>208</td><td>Pin 6</td><td>DC Trip</td><td>-</td></tr><tr><td>301</td><td>Rated DC residual operating current <span class="math">I_{\Delta dc}</span></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></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> <sup>1)</sup></td><td>30mA</td><td>30mA</td></tr><tr><td>304</td><td>Rated AC residual non-operating current <span class="math">I_{\Delta nc}</span> <sup>1)</sup></td><td>15mA</td><td>15mA</td></tr><tr><td>305</td><td>Electrical endurance</td><td>20,000</td><td>20,000</td></tr><tr><td>306</td><td>Rated operating temperature</td><td>-40~85 ℃</td><td>-40~85 ℃</td></tr><tr><td>307</td><td>Pollution degree</td><td>2</td><td>2</td></tr></tbody></table>

> *1) #303 and #304 apply to only the AC\&DC Trip Pin that sends fault output of Type-A 30mA detection.*

***

### 3. Residual Current Detection Characteristics

#### **Operating Current**

<table><thead><tr><th width="81">#</th><th>Description</th><th>AC&#x26;DC trip signal</th><th>DC trip signal</th></tr></thead><tbody><tr><td>401</td><td>Operating current for smooth DC</td><td>4.0~6.0 mA</td><td>4.0~6.0 mA</td></tr><tr><td>402</td><td>Operating current for 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>Operating current for 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>Operating current for sinewave AC</td><td>22.0~28.0 mA</td><td>-</td></tr><tr><td>405</td><td>Operating current for A0 pulsating DC</td><td>10.5~42.0 mA</td><td>-</td></tr><tr><td>406</td><td>Operating current for A90 pulsating DC</td><td>7.5~42.0 mA</td><td>-</td></tr><tr><td>407</td><td>Operating current for A135 pulsating DC</td><td>3.3~42.0 mA</td><td>-</td></tr></tbody></table>

#### **Operating Time**

<table><thead><tr><th width="82">#</th><th width="225">Description</th><th>AC&#x26;DC trip signal</th><th>DC trip signal</th></tr></thead><tbody><tr><td>501</td><td>Response time for 6mA smooth DC residual current</td><td>≤ 500 ms</td><td>≤ 500 ms</td></tr><tr><td>502</td><td>Response time for 60mA smooth DC residual current</td><td>≤ 200 ms</td><td>≤ 200 ms</td></tr><tr><td>503</td><td>Response time for 200mA smooth DC residual current</td><td>≤ 70 ms</td><td>≤ 70 ms</td></tr><tr><td>504</td><td>Response time for 300mA smooth DC residual current</td><td>≤ 20 ms</td><td>-</td></tr><tr><td>505</td><td>Response time for 60mA DC rectified from 2 phases</td><td>≤ 200 ms</td><td>≤ 200 ms</td></tr><tr><td>506</td><td>Response time for 200mA DC rectified from 2 phases</td><td>≤ 70 ms</td><td>≤ 70 ms</td></tr><tr><td>507</td><td>Response time for 300mA DC rectified from 2 phases</td><td>≤ 20 ms</td><td>-</td></tr><tr><td>508</td><td>Response time for 60mA DC rectified from 3 phases</td><td>≤ 200 ms</td><td>≤ 200 ms</td></tr><tr><td>509</td><td>Response time for 200mA DC rectified from 3 phases</td><td>≤ 70 ms</td><td>≤ 70 ms</td></tr><tr><td>510</td><td>Response time for 300mA DC rectified from 3 phases</td><td>≤ 20 ms</td><td>-</td></tr><tr><td>511</td><td>Response time for 30mA AC residual current</td><td>≤ 80 ms</td><td>> 10000 ms</td></tr><tr><td>512</td><td>Response time for 60mA AC residual current</td><td>≤ 60 ms</td><td>> 300 ms</td></tr><tr><td>513</td><td>Response time for 150mA AC residual current</td><td>≤ 20 ms</td><td>> 80 ms</td></tr><tr><td>514</td><td>Response time for 5A AC residual current</td><td>≤ 20 ms</td><td>> 80 ms</td></tr></tbody></table>

***

### 4. Application Notes of 12V DC Version

#### **Typical application diagram**

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FBO4FQQvSqOFJNkgYwj4b%2Fimage.png?alt=media&amp;token=2dbe16b7-73e4-4135-8c9a-a2f118ddf6af" alt=""><figcaption></figcaption></figure>

Additional information

* **Attention:** A Mosfet is built in the 12V DC sensor to switch the connection to signal V- as normal using. The maximum switching current of the 12V DC sensor is **500mA**.
* **Attention:** Pin 6 is only for internal use by the sensor. It shall be kept floating (not connected).

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

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FnlK9bFbHZADCrsIK4zje%2Fimage.png?alt=media&amp;token=c5b9744a-288c-4133-b619-c442f423a3a0" alt=""><figcaption></figcaption></figure>

A self-test excluding offset calibration is activated if Pin 3 - Test is connected to a high level for a period of **40ms to 1000ms**. *(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%2Fn9apXI1J55cerlhJrlx5%2Fimage.png?alt=media&amp;token=4c68dd0c-c1e1-4b79-864e-d313ad0524f8" alt=""><figcaption></figcaption></figure>

An offset calibration is activated if Pin 3 - Test is connected to a high level for a period of **4.5s ± 5%**. An offset calibration can be activated at regular intervals (such as startup) 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 sensor** and the switching devices must be open. Also, the power supply voltage at Pin 2 Vcc must be stay at **12VDC ± 20%**.

#### **Possible Output States (12V Version)**

| Status                                                             | PIN 4 Output (DC Trip) | PIN 5 Output (AC & DC Trip) |
| ------------------------------------------------------------------ | ---------------------- | --------------------------- |
| **Normal condition**                                               | GND                    | GND                         |
| $$I\_{\Delta} \ge 6$$ **mA DC**                                    | High impedance         | High impedance              |
| $$I\_{\Delta} \ge 30$$ **mA AC**                                   | GND *1)*               | High impedance              |
| $$I\_{\Delta} \ge 30$$ **mA AC &** $$I\_{\Delta} \ge 6$$ **mA DC** | High impedance         | High impedance              |

> *1) A change from GND to High impedance is allowed, if such a change is compliant with IEC 62955.*

***

### 5. Application Notes of 5V DC Version

#### **Typical application diagram**

<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 Pin2/6 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%**.

#### **Possible Output States (5V Version)**

| Status                                                             | PIN 2 Output (AC & DC Trip) | PIN 6 Output (DC Trip) |
| ------------------------------------------------------------------ | --------------------------- | ---------------------- |
| **Normal condition**                                               | GND                         | GND                    |
| $$I\_{\Delta} \ge 6$$ **mA DC**                                    | High level                  | High level             |
| $$I\_{\Delta} \ge 30$$ **mA AC**                                   | High level                  | GND *1)*               |
| $$I\_{\Delta} \ge 30$$ **mA AC &** $$I\_{\Delta} \ge 6$$ **mA DC** | High level                  | High level             |

> *1) A change from GND to High level is allowed, as long as such a change is compliant with IEC 62955.*

***

### 6. Mechanical outline

#### **BRCS01C-05-H1 / BRCS01C-12-H1:**

<figure><img src="https://68488808-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FHvbfMjByutgkTiF9dDQE%2Fimage.png?alt=media&amp;token=b105c767-fad6-4e68-9914-1ff8699179ed" alt=""><figcaption></figcaption></figure>

| Version           | Pin 1 | Pin 2        | Pin 3 | Pin 4   | Pin 5        | Pin 6   |
| ----------------- | ----- | ------------ | ----- | ------- | ------------ | ------- |
| **BRCS01C-05-\*** | 5V DC | AC & DC Trip | GND   | CAL     | Test         | DC Trip |
| **BRCS01C-12-\*** | GND   | +12V DC      | TEST  | DC Trip | AC & DC Trip | NC      |

<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>

***

### 7. Ordering information

<table><thead><tr><th width="65">#</th><th width="197">Order Number</th><th>Description</th></tr></thead><tbody><tr><td>1</td><td><strong>BRCS01C-05-H1</strong></td><td><strong>BRCS01C Residual Current Sensor, 5V DC Interface, Flexible</strong><br>• Type A 30 mA+DC6mA / DC6mA, 32A, 1P+N / 3P+N</td></tr><tr><td>2</td><td><strong>BRCS01C-12-H1</strong></td><td><strong>BRCS01C Residual Current Sensor, 12V DC Interface, Flexible</strong><br>• Type A 30 mA+DC6mA / DC6mA, 32A, 1P+N / 3P+N</td></tr><tr><td>3</td><td><strong>BCHY6HY6-N030</strong></td><td><strong>300mm cable with 2×6PIN HY2.0 Connectors</strong> <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.*&#x20;
>
> *2) Specific customization requirements can be provided upon request.*

***

### 8. 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.
* Please refer to the product standards of RCD/RDC-DD (Residual Current Device / Residual Direct Current Detection Device), when designing built-in RCD/RDC-DD for mode-2/3 Electric Vehicle Supply Equipment with the sensor.