Quick teardown. Very easy to disassemble, just unscrew two screws and open the case.
Device has very slid design. WiFi module - T1-3S
Connections to read/program flash
Factory dump attached.
DPIds translated.
autoexec.bat
Web Interface
MQTT/Homeassistant
AI: Could you clarify what specific help or information you are looking for regarding the RMshebei WTDZW-63A2 Smart Circuit Breaker?
Don't understand how to implement the following DpIds
9
1. Alarm
2. Big-endian, HEX, 4 bytes
3. Frame format: report all 4 bytes.
Each alarm bit: 1 = alarm present, 0 = no alarm.
Unused bits are padded with 0; undefined high bits are also 0.
Example: 0x00 00 00 09 indicates
leakage self-test abnormal alarm and short-circuit alarm;
no other alarms.
4. Communication logic: whenever any alarm occurs or clears,
report the full 4-byte field to update the panel.
17,18
1. Alarm threshold enable control and settings.
2. HEX, big-endian. Total length = number_of_alarms × 4 bytes.
3. Frame format: each alarm uses 4 bytes:
byte1 = alarm present;
byte2 = breaker action when alarm occurs
(0x01 = trip/open, 0x00 = no action, alarm only);
bytes3–4 = alarm threshold.
Example: 0x01 01 00 00 03 01 00 14 →
short-circuit alarm supported and trips automatically (threshold padded 0);
overload alarm supported and trips with threshold 20 kW;
no other alarms.
4. Communication logic:
A) After successful pairing, report in this format so the panel knows which
alarms are supported. If setting fails, re‑pair and report again.
B) Also report once at breaker power‑up. C) The panel sends alarm settings
per protocol.
AI: Are you experiencing any particular issues, errors, or challenges with the device, or are you sharing this information for reference?
Sharing this information
Device has very slid design. WiFi module - T1-3S
Connections to read/program flash
Factory dump attached.
DPIds translated.
Code: JSON
Log in, to see the code
autoexec.bat
Code: Text
Log in, to see the code
Web Interface
MQTT/Homeassistant
AI: Could you clarify what specific help or information you are looking for regarding the RMshebei WTDZW-63A2 Smart Circuit Breaker?
Don't understand how to implement the following DpIds
9
1. Alarm
2. Big-endian, HEX, 4 bytes
3. Frame format: report all 4 bytes.
Each alarm bit: 1 = alarm present, 0 = no alarm.
Unused bits are padded with 0; undefined high bits are also 0.
Example: 0x00 00 00 09 indicates
leakage self-test abnormal alarm and short-circuit alarm;
no other alarms.
4. Communication logic: whenever any alarm occurs or clears,
report the full 4-byte field to update the panel.
17,18
1. Alarm threshold enable control and settings.
2. HEX, big-endian. Total length = number_of_alarms × 4 bytes.
3. Frame format: each alarm uses 4 bytes:
byte1 = alarm present;
byte2 = breaker action when alarm occurs
(0x01 = trip/open, 0x00 = no action, alarm only);
bytes3–4 = alarm threshold.
Example: 0x01 01 00 00 03 01 00 14 →
short-circuit alarm supported and trips automatically (threshold padded 0);
overload alarm supported and trips with threshold 20 kW;
no other alarms.
4. Communication logic:
A) After successful pairing, report in this format so the panel knows which
alarms are supported. If setting fails, re‑pair and report again.
B) Also report once at breaker power‑up. C) The panel sends alarm settings
per protocol.
AI: Are you experiencing any particular issues, errors, or challenges with the device, or are you sharing this information for reference?
Sharing this information
