NDW1A 4000
940Part No.:NDW1A-4000 Advantages: NDW1A-4000 Technical Parameter List
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Specification:
| Electrical Features | |
| Mode | Electromagnetic |
| Type (wave form of the earth leakage sensed) | B |
| Rated Current In | 25, 40, 63A |
| Poles | 2P, 4P |
| Rated Voltage Ue | 2P 240V~, 4P 415V~ |
| Insulation Voltage Ui | 500V |
| Rated Frequency | 50/60Hz |
| Rated Residual Operation Current (I△n) | 30mA |
| Rated Residual Operating Current (I△dc) | 6mA |
| Rated Residual Making & Breaking Capacity (I△m) | 500A (In≤40A), 10In (In>40A) |
| Short-circuit Current Inc = I△c | 10000A |
| SCPD Fuse | |
| Break Time Under I△n | ≤0.1s |
| Rated Impulse Withstand Voltage (1.5/50) Uimp | 4000V |
| Dielectric Test Voltage at ind.Freq. for 1min | 2.5kV |
| Electrical Life | 2000 Cycles |
| Mechanical Life | 4000 Cycles |
| Instalación | |
| Contact Position Indicator | Yes |
| Protection Degree | IP20 |
| Ambient Temperature (with daily average≤35℃) | -25℃~+35℃ |
| Storage Temperature | -25℃~+70℃ |
| Terminal Connection Type | Cable/Pin-type Busbar/U-type Busbar |
| Terminal Size top/bottom for Cable | 35mm2 18~3AWG |
| Terminal Size top/bottom for Busbar | 35mm2 18~3AWG |
| Tightening Torque | 2.5Nm 22In-lbs |
| Mounting | On DIN Rail EN60715(35mm) by means of fast clip device |
| Connection | Power Supply in Both Directions |
Tripping Current Range:
| Lagging Angle | I△n>0.01A | I△n≤0.01A |
| 0° | 0.35I△n ≤ I△ ≤ 1.4I△n | 0.35I△n ≤ I△ ≤ 2I△n |
| 90° | 0.25I△n ≤ I△ ≤ 1.4I△n | 0.25I△n ≤ I△ ≤ 2I△n |
| 135° | 0.11I△n ≤ I△ ≤ 1.4I△n | 0.11I△n ≤ I△ ≤ 2I△n |
| Alternative Current Sensitive | Pulsating Direct Current Sensitive | Surge Current Proof |
| B Class Tripping is ensured for sinusoidal AC residual currents pulsed DC residual current, alternating residual sinusoidal currents up to 1000Hz, pulsating direct residual currents and for smooth direct residual currents, whether applied suddenly or increasing slowly. | They react to AC and pulsating DC fault current which reach 0 or almost 0 within one time period of the mains frequency. | RCCB’s surge capacity. Not tripping at standardized 8/20 us surge-current waves acc.to VDE 0432 Part 2 with surge current values of up to 250A. |
Overall and Installation Dimension (mm)

Circuit Diagram

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