English
Español
Mechanism and Features
• The detection element and trip element of the product are set between the input terminal and the output terminal
• The operating characteristics of the product cannot be changed by external mechanical devices
• The operating mechanism has a free tripping function
• The operating parts cannot be removed from the outside of the shell, and the product shell should not affect the normal operation of the operating mechanism. The component group should replace the contact pressure to ensure that the contact pressure of the product will not change during operation.
Double breakpoint design of L-pole and N-pole contacts, external heat dissipation groove, with RCBO words and circuit diagram logo, indicator window with glass sheet dustproof, double top rod design of the tripper makes the product tripping mechanism more reliable, 3P+N product handle connection can be directly connected with assembly parts or connected with handle sheath, with wiring module, 1P+N maximum rated current 63A, 1P+N electronic B-type leakage protection performance design…
Technical Parameters
| Product name | Leakage circuit breaker |
| Product model | HLWRO4-40 |
| Type | A and AC type, F type, G type, S type, B type...... |
| Number of poles | 3P+N |
| Rated current | 2, 4, 6, 10, 16, 20, 25, 32, 40A |
| Rated residual working current l△n(A) | 0.01, 0.03, 0.1, 0.3, 0.5 |
| Rated voltage | AC415V |
| Residual working current range | 0.5l△n~l△n |
| Working time | ≤0.3s |
| Rated short-circuit breaking capacity | 6000A |
| Mechanical life | Not less than 4000 times |
| Protection level | IP20 |
Overall & Installation Dimensions
Characteristic curve
Wiring diagram
Working characteristics
| Testing Procedure | Type | Test current | Initial state | Tripping or non-tripping time limit | Expected result | Notes |
| a | B,C,D | 1.131n | Cold | t≤1h | No tripping | |
| b | B,C,D | 1.451n | Tested | t≤lh | Tripping | Improvement of current stability within 5 seconds |
| c | B,C,D | 2.55ln | Cold | 1s | Tripping | |
| d | B | 3ln | Cold | t≤0.1s | No tripping | Turn on the auxiliary switch to turn off the current |
| C | 5ln | |||||
| D | 10ln | |||||
| e | B | 5ln | Cold | t≤0.1s | Tripping | Turn on the auxiliary switch to turn off the current |
| C | 10ln | |||||
| D | 20ln |
The term "cold" means without any load before testing at the reference set temperature.
Residual current tripping time
| Type | In/A | l△n/A | The residual current (I△) corresponds to the following disconnection time (S) | |||||
| In/A | ln/A | I△n | 2ln | 5l△n | 5A,10A,20A,50A,100A,200A,500A | I△t | ||
| General Type | Any value | Any value | 0.3 | 0.15 | 0.04 | 0.04 | 0.04 | Maximum segment time |
> How to Diagnose a Failing Surge Protective Device (SPD) – Step‑by‑Step Troubleshooting
SPD failed without visible damage? Learn to check status indicators, measure leakage current, and know when to replace.
> What Is a Timer Relay?
What’s the difference between on‑delay and off‑delay? Can a timer relay replace a PLC? Answers to 6 common B2B questions.
> Common Causes of Overload Relay Tripping and How to Prevent Them
Why does your motor overload relay keep tripping? Learn real causes (overload, phase loss, ambient heat) and how to prevent false trips.
> Application Guide for Hydraulic Magnetic Circuit Breakers in Sensitive Electronic Equipment
Why use hydraulic magnetic breakers for medical, IT or telecom equipment? Temperature stability, delay curves, and selection tips.