BRCS01C - IEC

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

1. Introduction

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

Technical Specification

BRCS01C-05-H1

BRCS01C-12-H1

101

Rated operating voltage in monitoring circuit

230/400VAC

102

Rated current in monitoring circuit

≤ 32A

103

Poles in monitoring circuit

1P+N / 3P+N

104

Frequency in monitoring circuit

50Hz

105

Rated impulse withstand voltage in monitoring circuit

6kV

106

Over-voltage category in monitoring circuit

III

201

Rated operating voltage in control circuit, $V_{cc}$

5VDC ± 3%

12VDC ± 20%

202

Power consumption

< 500mW

203

Pin 1

Vcc 5VDC

GND

204

Pin 2

AC & DC Trip

+12VDC

205

Pin 3

GND

Test

206

Pin 4

CAL

DC Trip

207

Pin 5

Test

AC & DC Trip

208

Pin 6

DC Trip

301

Rated DC residual operating current $I_{\Delta dc}$

6mA

302

Rated DC residual non-operating current $I_{\Delta ndc}$

3mA

303

Rated AC residual operating current $I_{\Delta n}$ ¹⁾

30mA

304

Rated AC residual non-operating current $I_{\Delta nc}$ ¹⁾

15mA

305

Electrical endurance

20,000

306

Rated operating temperature

-40~85 ℃

307

Pollution degree

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

Description

AC&DC trip signal

DC trip signal

401

Operating current for smooth DC

4.0~6.0 mA

402

Operating current for DC rectified from 2 phases

4.0~7.0 mA

403

Operating current for DC rectified from 3 phases

4.0~6.2 mA

404

Operating current for sinewave AC

22.0~28.0 mA

405

Operating current for A0 pulsating DC

10.5~42.0 mA

406

Operating current for A90 pulsating DC

7.5~42.0 mA

407

Operating current for A135 pulsating DC

3.3~42.0 mA

Operating Time

Description

AC&DC trip signal

DC trip signal

501

Response time for 6mA smooth DC residual current

≤ 500 ms

502

Response time for 60mA smooth DC residual current

≤ 200 ms

503

Response time for 200mA smooth DC residual current

≤ 70 ms

504

Response time for 300mA smooth DC residual current

≤ 20 ms

505

Response time for 60mA DC rectified from 2 phases

≤ 200 ms

506

Response time for 200mA DC rectified from 2 phases

≤ 70 ms

507

Response time for 300mA DC rectified from 2 phases

≤ 20 ms

508

Response time for 60mA DC rectified from 3 phases

≤ 200 ms

509

Response time for 200mA DC rectified from 3 phases

≤ 70 ms

510

Response time for 300mA DC rectified from 3 phases

≤ 20 ms

511

Response time for 30mA AC residual current

≤ 80 ms

> 10000 ms

512

Response time for 60mA AC residual current

≤ 60 ms

> 300 ms

513

Response time for 150mA AC residual current

≤ 20 ms

> 80 ms

514

Response time for 5A AC residual current

≤ 20 ms

> 80 ms

4. Application Notes

Typical application diagram

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

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

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

$I\_{\Delta} \ge 6$ mA DC

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

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

Typical application diagram

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

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

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

$I_{\Delta} \ge 6$ mA DC

High level

$I_{\Delta} \ge 6$ mA DC

High level

GND 1)

$I_{\Delta} \ge 30$ mA AC & $I_{\Delta} \ge 6$ mA DC

High level

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

5. Mechanical outline

BRCS01C-05-H1 / BRCS01C-12-H1:

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

6. Ordering information

Order Number

Description

BRCS01C-05-H1

BRCS01C Residual Current Sensor, 5V DC Interface, Flexible Type A 30 mA+DC6mA / DC6mA, 32A, 1P+N / 3P+N

BRCS01C-12-H1

BRCS01C Residual Current Sensor, 12V DC Interface, Flexible Type A 30 mA+DC6mA / DC6mA, 32A, 1P+N / 3P+N

BCHY6HY6-N030

300mm cable with 2×6PIN HY2.0 Connectors ^{1) 2)}

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.
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.

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