Dongfa Intelligent, a Residual Current Operated Circuit Breaker manufacturer, supplies the COAFLE-32 series for low-voltage terminal distribution applications where residual current and overcurrent protection are required in the same device. The breaker integrates residual current, overload, and short-circuit protection, with rated currents from 6A to 63A and selectable 30mA or 50mA residual operating current. C and D trip characteristics are available for different circuit load conditions.
The COAFLE-32 combines three protection functions within one circuit breaker: residual current protection, overload protection, and short-circuit protection. This configuration is intended for terminal circuits where leakage protection needs to be combined with conventional overcurrent protection.
The series is available with 30mA or 50mA rated residual operating current. Its specified residual operating time is ≤0.1s at IΔn, ≤0.05s at 2IΔn, and ≤0.04s at 5IΔn.
The rated residual non-operating current is 0.5IΔn. This specifies the residual current level below which the breaker is designed not to operate.
The breaker also provides protection against excessive current caused by overload and short-circuit conditions. The specified overload characteristics are 1.13In no trip and 1.45In trip under the corresponding test conditions.
For short-circuit protection, the specified characteristics include 2.25In trip and 5In no trip. The instantaneous trip characteristic is 10In for C type and 16In for D type.
| Protection Parameter | Specification |
| Rated residual operating current | 30mA / 50mA |
| Rated residual non-operating current | 0.5IΔn |
| Residual operating time | IΔn ≤0.1s; 2IΔn ≤0.05s; 5IΔn ≤0.04s |
| Overload protection | 1.13In no trip; 1.45In trip |
| Short-circuit protection | 2.25In trip; 5In no trip; 10In/16In trip |
The COAFLE-32 series provides several electrical configurations so the breaker can be selected according to the circuit voltage, phase arrangement, rated current, residual current requirement, and short-circuit conditions.
| Parameter | Specification |
| Product Type | Residual Current Operated Circuit Breaker (RCBO) |
| Product Model | COAFLE-32 |
| Pole/Wire Configurations | 1P+N, 2P, 3P, 3P+N, 4P |
| Rated Voltage | 230V (1P+N, 2P); 230/400V (3P, 3P+N, 4P) |
| Frame Current | 32A: 6A, 10A, 20A, 25A, 32A; 63A: 6A, 10A, 20A, 25A, 32A, 40A, 50A, 63A |
| Rated Residual Operating Current | 30mA / 50mA |
| Instantaneous Trip Characteristic | C type (5-10In); D type (10-14In) |
| Rated Short-Circuit Capacity | 4500A / 6000A |
| Rated Residual Making and Breaking Capacity | 2000A |
| Rated Residual Non-Operating Current | 0.5IΔn |
| Residual Operating Time | IΔn ≤0.1s; 2IΔn ≤0.05s; 5IΔn ≤0.04s |
| Overload Protection | 1.13In no trip; 1.45In trip |
| Short-Circuit Protection | 2.25In trip; 5In no trip; 10In/16In trip |
1P+N and 2P are available for 230V single-phase systems. 3P, 3P+N, and 4P are available for 230/400V three-phase systems.
The series covers rated currents from 6A to 63A. Available ratings include 6A, 10A, 20A, 25A, 32A, 40A, 50A, and 63A depending on the selected frame configuration. The rated current should be matched to the protected circuit and load requirements.
30mA and 50mA options are available. The required residual operating current should be selected according to the protection requirements of the electrical installation.
C type has an instantaneous trip characteristic of 5-10In, while D type is 10-14In. Selection should consider the load characteristics and starting current of the protected circuit.
The COAFLE-32 is available with 4500A or 6000A rated short-circuit capacity. The selected value should correspond to the short-circuit conditions of the installation.
The Residual Current Operated Circuit Breaker is intended for low-voltage terminal distribution circuits where residual current protection needs to be combined with overload and short-circuit protection. Its different current ratings and pole/wire configurations allow it to be used across single-phase and three-phase distribution arrangements.
The COAFLE-32 integrates residual current, overload, and short-circuit protection in one circuit breaker. This makes it suitable for terminal circuits where these protection functions are required together.
The two options have different rated residual operating current values. The appropriate option should be selected according to the protection requirements of the electrical installation and the specified system design.
1P+N and 2P are specified for 230V single-phase systems, while 3P, 3P+N, and 4P are specified for 230/400V three-phase systems.
The rated residual making and breaking capacity of the COAFLE-32 is 2000A. This parameter specifies the product's rated capability for making and breaking residual fault current under the applicable test conditions.
Yes. For replacement projects, the original breaker model, mounting dimensions, pole/wire configuration, rated current, residual operating current, trip characteristic, and quantity should be provided for compatibility review.
Standard Residual Current Operated Circuit Breaker products have a stated lead time of 7-15 working days. Custom products generally require 15-30 working days. Standard products support a minimum trial order of 1 unit.
For replacement applications, the original breaker information should be checked before selecting a COAFLE-32 configuration. Rated current alone is not sufficient to confirm compatibility.
The following information can be provided for technical review:
For project quotations, the required short-circuit capacity should also be confirmed so that the appropriate configuration can be selected.
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