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This MicroLogic 4.3 is a 3 poles 3d electronic trip unit used on ComPacT NSX 630 circuit breakers. This 570A rating electronic trip unit is an optimum choice for all standard and specific applications. It embeds adjustable long time protection against overloads. It provides also an adjustable short-time protection and a fixed instantaneous protection against short-circuits. MicroLogic 4.3 Vigi trip unit offers an integrated adjustable earth-leakage protection. MicroLogic 4.3 indicates overloads with Alarm LEDs. The green Ready LED flashes if the circuit breaker is ready to trip. An earth leakage pre-alarm can be remotely available by installing the optional SDx module (LV429532). This product is part of our EcoStruxure Power architecture if associated with PowerTag NSX and ComPacT NSX basic frame.
Products specifications
| Attribute name | Attribute value |
|---|---|
| Main | |
| Trip unit technology | electronic |
| Device application | distribution |
| Range compatibility | ComPacT new generation NSX630 |
| Poles description | 3P |
| Mounting mode | fixed |
| Range | ComPacT new generation |
| Protection type | R : for earth-leakage protection, I : for instantaneous short-circuit protection, So : for short time short-circuit protection with fixed delay, L : for overload protection (long time) |
| Product or component type | trip unit |
| Protected poles description | 3D |
| Network type | AC |
| Trip unit protection functions | LSoIR |
| [Ue] rated operational voltage | 440 V AC 50/60 Hz |
| Range of product | ComPacT NSX400...630 new generation |
| Trip unit name | MicroLogic 4.3 |
| [In] rated current | 570 A at 40 °C |
| Network frequency | 50/60 Hz |
| Complementary | |
| Residual earth-leakage time delay adjustment type | adjustable |
| Short-time pick-up adjustment type Isd | adjustable |
| [IΔn] residual earth-leakage sensitive adjustment | 10-10 A, 5-5 A, 3-3 A, 1-1 A, 0.5-0.5 A, 0.3-0.3 A |
| [Isd] short-time pick-up adjustment range | 1.5...10 x Ir |
| Local signalling | color indicator (yellow) for residual current, LED 90 % Ir (orange) for overload, LED 105 % Ir (red) for overload, flashing LED (green) for ready to operate |
| Long time pick-up adjustment type Ir | adjustable 9 settings |
| Long time pick-up adjustment range | 250...570 A |
| Instantaneous pick-up adjustment range | 6900 A |
| Short-time delay adjustment type | fixed |
| Residual earth-leakage sensitity adjustment type | adjustable |
| [tr] long-time delay adjustment range | 400-400 s at 1.5 x Ir, 16-16 s at 6 x Ir, 11-11 s at 7.2 x Ir |
| Zone selective interlocking ZSI | without |
| Instantaneous pick-up adjustment type Ii | fixed |
| Long time delay adjustment type | fixed |
| [Δt] residual earth-leakage time delay adjustment | 1-1 s, 500-500 ms, 150-150 ms, 60-60 ms, 0-0 ms |
| Operating mode | OFF using the IΔn rotary switch |
| Earth-leakage protection class | class A |
| Earth-leakage protection | integrated |
| Thermal memory | 20 minutes before and after tripping |
| Environment | |
| Ambient air temperature for storage | -50-85 °C |
| Pollution degree | 3 conforming to IEC 60947-1 |
| Electrical shock protection class | class II |
| IP degree of protection | IP40 conforming to IEC 60529 |
| Standards | EN/IEC 60947-2 |
| Ambient air temperature for operation | -25-70 °C |
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