BRCS03C - UL

BRCS03C-U5/U6 - UL & IEC

Applies to: BRCS03C-U5/U6 Residual Current Sensor (UL 2231-2 (CCID20) and IEC 62955 / IEC 62752) | Last Updated: 2026-09-28

1. Introduction

The BRCS03C-U5/BRCS03C-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

BRCS03C-U5

BRCS03C-U6

101

Poles in monitoring circuit

1P+N / 3P+N

102

Rated current in monitoring circuit

32A

103

Rated frequency in monitoring circuit

60Hz

104

Rated impulse withstand voltage in monitoring circuit

6kV

105

Over-voltage category in monitoring circuit

III

201

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

5VDC ± 3%

202

Power consumption

< 500mW

203

Pin 1 – N.C.

Not connected

204

Pin 2 – Test signal

Digital input

205

Pin 3 – Fault signal: X6-IEC62955 (RDC-MD) or X30-IEC62752 (IC-CPD)

Digital output (RDC-MD)

Digital output (IC-CPD)

206

Pin 4 – Fault signal: X20-UL2231 (CCID20)

Digital output

207

Pin 5 – GND

GND

208

Pin 6 – Vcc for 5V

+5VDC

301

Rated DC residual operating current $I_{\Delta dc}$ (IEC 62955)

6mA

302

Rated DC residual non-operating current $I_{\Delta ndc}$ (IEC 62955)

3mA

303

Rated AC residual operating current $I_{\Delta n}$ (UL2231-2)

20mA

304

Rated AC residual non-operating current $I_{\Delta nc}$ (UL2231-2)

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

308

Rated operating temperature

-40~85 ℃

309

Pollution degree

3. Residual Current Detection Characteristics

PIN 3 (X6/X30 Output) - IEC 62955 / IEC 62752

Operating Current

Operating Current

PIN 3 (X6) @BRCS03C-U5

PIN 3 (X30) @BRCS03C-U6

401

Smooth DC

4.0~6.0 mA

402

DC rectified from 2 phases

4.0~7.0 mA

403

DC rectified from 3 phases

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 3 (X6) @BRCS03C-U5

PIN 3 (X30) @BRCS03C-U6

501

Smooth DC 6mA

≤ 500 ms

502

Smooth DC 60mA

≤ 200 ms

503

Smooth DC 200mA

≤ 70 ms

504

Smooth DC 300mA

≤ 20 ms

505

DC rectified from 2 phases 60mA

≤ 200 ms

506

DC rectified from 2 phases 200mA

≤ 70 ms

507

DC rectified from 2 phases 300mA

≤ 20 ms

508

DC rectified from 3 phases 60mA

≤ 200 ms

509

DC rectified from 3 phases 200mA

≤ 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 4 (X20 Output) - UL2231-2 (CCID-20)

Operating Current

Operating Current

PIN 4 (X20 Output) @BRCS03C-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 4 (X20 Output) @BRCS03C-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

BRCS03C-U5/U6 EV charging controller

Additional information

Ferrite beads - such as BLM21PG331SN1D - are suggested to replace the L1 at some existing charging controller models. C3 might be added in case of limit 5V DC power supply. Please ensure the DC power supply to the 5V version sensor is within the range of 5VDC ± 3%, so as to ensure the proper function of the sensor.
NPN transistors are used internally at the Pin 3 and Pin 4 of the 5V version sensor, and the direct connection of Pin 3/4 to switching devices such as relays or contactors - is NOT allowed. $V_{ce}$ and $I_c$ of the NPN transistor inside the 5V version sensor are maximally 40V and 50mA.

Self-test time chart

A self-test excluding offset calibration is activated if Pin 2 - Test is connected to GND for a period of 40ms to 130ms.
A self-test including offset calibration is activated if Pin 2 - Test is connected to GND for a period of 150ms to 1000ms. (Note: $t_1$ is the response time for internally generated test current.)

Offset calibration time chart

An explicit offset calibration excluding self-test cycle is activated if Pin 2 - Test is connected to GND for a period of 2s to 3s. 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 6 Vcc must be stay at 5VDC ± 3%.

Switching recovery level

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

BRCS03C-U5-L1 / BRCS03C-U6-L1:

Model

Pin 1

Pin 2

Pin 3

Pin 4

Pin 5

Pin 6

BRCS03C-U5-L1

Test

DC fault (IEC 62955)

AC & DC fault (UL2231(CCID20))

GND

5V DC

BRCS03C-U6-L1

Test

AC & DC fault (IEC 62752)

AC & DC fault (UL2231(CCID20))

GND

5V DC

6. Ordering information

Order Number

Description

BRCS03C-U5-L1

BRCS03C Residual Current Sensor 5V DC Interface, PCB-mount (Copper jumper) UL2231-2(CCID20) & IEC62955, 32A 6 Pin, Pitch=1.9mm

BRCS03C-U6-L1

BRCS03C Residual Current Sensor 5V DC Interface, PCB-mount (Copper jumper) UL2231-2(CCID20) & IEC62752, 32A 6 Pin, Pitch=1.9mm

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 exceed 260°C for 10 seconds when soldering the sensors of PCB-mounting versions. This is the maximum heat resistance grade of these sensors.
Do NOT solder the sensors with the central isolation cross installed. The central isolation cross can be installed after soldering the sensors.
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.

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