| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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The DAM1 series circuit breakers from Shanghai DaDa Electric Co., Ltd. are meticulously engineered to ensure reliable current conduction under normal conditions and to swiftly interrupt current flow in the event of short circuits, overloads, unacceptable voltage drops, operational triggers, and electrical circuit disconnections. Designed for seamless integration into electrical systems with an operational voltage cap of 400V and accommodating a rated current spectrum from 12.5A to a robust 1600A, these circuit breakers stand out for their compliance with stringent standards EN 60947-1 and EN 60947-2, ensuring top-tier safety and performance.
Thermal Protection Function: The bimetal component within the circuit breaker offers effective thermal protection by bending towards the metal with a higher thermal expansion rate when subjected to heat, thereby releasing a notch to deactivate the breaker. This bending action is directly correlated with the current passing through the breaker, ensuring precise overcurrent protection at load currents that exceed the rated threshold.
Magnetic Protection Function: The circuit breaker is also equipped with an advanced short circuit protection mechanism that promptly initiates a break in the system's energy flow in the event of a short circuit. This is achieved through a mechanical opening mechanism activated by the magnetization generated within the magnetic field caused by the short circuit current, ensuring immediate response and enhanced protection.
| Thermal-Magnetic fixed type Circuit Breakers | ||||||
| Model | DAM1-250 | |||||
| Breaking Capacity Code | N | S | H | G | ||
| Rated Current of Frame size- Inm (A) | 250A | |||||
| Rated Current-In(40,50 or 55ºC) (A) | 63 - 80-100-125 - 160(180) - 200(225) - 250(320)A | |||||
| Rated İnsulation Voltage -Ui(a.c.) 50-60Hz (V) | 750V | |||||
| Rated operation Voltage -Ue(a.c.) 50-60Hz (V) | 400/415V | |||||
| Number of Pole | 3P /4P | |||||
| Rated ultimate short Circuit breaking Capacity kA Icu AC400V/50Hz O-CO (KA) | 35 | 50 | 65 | 85 | ||
| Rated service short Circuit breaking Capacity kA Ics AC400V/50Hz O-CO-CO (KA) | 26.25 | 37.5 | 48.75 | 51 | ||
| Rated short-circuit breaking capacity Icm(peak)/cos ф AC400V/50HZ O-CO (KA) | 77/0.25 | 114/0.25 | 143/0.2 | 178/0.2 | ||
| Rated impulse withstand Voltage -Uimp (V) | 8000 | |||||
| Dielectric Propery (V) | 3000 | |||||
| lonization distance (mm) | ≤30/0 | |||||
| Endurance | Total Cycles | 8000 | ||||
| Electrical Life | 1000 | |||||
| Mechanical Life | 7000 | |||||
| Over Current trip | Thermal and Magnetic release fix type | √ | ||||
| Category (EN 60947-2/IEC 60947-2) | Main circuit | A/B | ||||
| Auxiliary circuit | AC-15 | |||||
| Under Voltage Release | √ | |||||
| Shunt Release | √ | |||||
| Auxiliary Contact | √ | |||||
| Alarm Contact | √ | |||||
| Auxiliary Contact and Alarm Contact | √ | |||||
| Handle Operation Mechanism | √ | |||||
| Electrical Operastion Mechanism | √ | |||||
| DIN clips | - | |||||
| Terminal cover | √ | |||||
| Phase seperator | √ | |||||
| Extention Handle | - | |||||
| W (mm) | 3P | 105 | ||||
| 4P | 140 | |||||
| L (mm) | 3P | 170 | ||||
| 4P | 170 | |||||
| H (mm) | 3P | 103.5 | ||||
| 4P | 103.5 | |||||
| Weight | Fixed version 3P/4P | 2.7/3.5 | 41.5/5.5 | |||
| Plug-in version 3P/4P | 3.2/4.2 | 4.6/6 | ||||
| Draw out version 3P/4P | 3.6/4.6 | 5/6.4 | ||||
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