| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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Overview
The exceptional Dada DAM3-250 molded case circuit breaker boasts a remarkable rated current capacity reaching up to an impressive 250A. Perfectly crafted for power distribution circuits, these robust electrical devices are ideal for use with alternating current systems ranging from 50-60Hz, supporting a rated operating current of up to 1000A. Additionally, they are the perfect choice for safeguarding electric motors, providing reliable overload protection, and ensuring safety against short circuits and undervoltage conditions, even during infrequent motor starts.
The innovative DAM3 series sets itself apart from the DAM1 series by featuring a more compact design tailored for space efficiency, enhanced breaking capacities for greater reliability, and an emphasis on energy conservation, ensuring sustainability and cost-effectiveness.
Electrical parameters of DAM3-250 molded case circuit breaker| Rated current of frame size Inm [A] | 250 | ||||
| Rated current [A] | 100-250 | 100-225 | |||
| Number of poles | 2 / 3 / 4 | ||||
| Rated operating voltage | (AC)50-60HZ [V] | 400/690 | |||
| DC [V] | 250/1000 | ||||
| Rated impulse withstand voltage Uimp [KV] | 8 | ||||
| Rated insulation voltage Ui [V] | 750 | ||||
| Test voltage at industrial frequency for 1 min [V] | 3000 | ||||
| Rated ultimate short-circuit breaking capacity Icu [KA] | B | C | N | S | |
| (AC)50-60HZ 220/230V [KA] | 30 | 36 | 50 | 75 | |
| (AC)50-60HZ 400/415V [KA] | 18 | 25 | 36 | 50 | |
| (AC)50-60HZ 690V [KA] | 6 | 8 | 12 | 15 | |
| (DC)250V-2 Poles in series | 18 | 22 | 30 | 40 | |
| (DC)500V-2 Poles in series | 9 | 12 | 15 | 20 | |
| (DC)750V-4 Poles in series | 16 | 18 | 22 | 30 | |
| (DC)1000V-4 Poles in series | 13 | 15 | 18 | 25 | |
| Rated service short-circuit breaking capacity, Ics [KA] | |||||
| (AC)50-60HZ 220/230V [%Icu] | 60% | 60% | 60% | 50% | |
| (AC)50-60HZ 400/415V [%Icu] | 60% | 60% | 60% | 50% | |
| (AC)50-60HZ 690V [%Icu] | 60% | 60% | 60% | 50% | |
| category of utilization (EN 60947-2) | A | ||||
| Isolation condition | Bitmap | ||||
| Reference standard | IEC/EN 60947-2/GB 14048.2 | ||||
| Interchangeability | Bitmap | ||||
| Versions | Fixed | Bitmap | |||
| Plug-in | Bitmap | ||||
| Draw-out | - | ||||
| Endurance | Total cycles | 10000 | |
| Electrical endurance | 1500 | ||
| Mechanical endurance | 8500 | ||
Basic dimensions-fixed version |
3/4 Poies W[mm] | 70(2P) /104 /139 | |
| 3/4 Poies H[mm] | 59 | 62.5 | |
| H1[mm] | 78.5 | 82 | |
| 3/4 Poies L[mm] | 139 | ||
Introduction
The advanced DAM3-250 molded case circuit breaker is engineered to automatically interrupt the current flow when it surpasses the predefined release setting, ensuring enhanced safety. The term 'molded case' signifies the durable plastic insulator that forms the device's exterior, providing excellent insulation for the conductor and grounding metal components.
Working principle
The DAM3-250 molded case circuit breaker operates through manual control or electric closure of its main contact. Once engaged, the free release mechanism securely locks the main contact in the closed position. The system includes an overcurrent trip coil and a thermal trip element, both in series within the main circuit, while the undervoltage trip coil is cleverly arranged parallel to the power supply, ensuring optimal performance and safety.
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