Overview
The EZ9R34440 is a 4-pole Type AC RCCB from the Schneider Easy9 range, rated for 40 A switching current with a 30 mA earth-leakage sensitivity.

Schneider EZ9R34440 Mcb Devices — now discontinued, supplied from remaining surplus and broker stock.
| Parameter | Value |
|---|---|
| Earth-leakage sensitivity (IΔn) | 30 mA |
| Earth-leakage protection class / type | Type AC |
| Earth-leakage trip time delay | Instantaneous |
| Residual-current tripping technology | Voltage independent |
| Parameter | Value |
|---|---|
| Rated current (In) | 40 A |
| Rated operational voltage (Ue) | 400 V AC 50 Hz |
| Neutral pole position | Left |
| Network type | AC |
| Network frequency | 50 Hz |
| Rated insulation voltage (Ui) | 440 V AC |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Device location in system | Outgoer |
| Electrical durability | AC: 2000 cycles 400 V AC 50 Hz |
| Mechanical durability (operating cycles) | 5000 cycles |
| Parameter | Value |
|---|---|
| Product / component type | Residual current circuit breaker (RCCB) |
| Device short name | Easy9 RCCB |
| Parameter | Value |
|---|---|
| Mounting support | DIN rail |
| Mounting mode | Clip-on |
| Control type | Toggle |
| Width in 9 mm modules | 8 |
| Terminal connections | Tunnel type terminal (top or bottom) 1...35 mm² rigid Tunnel type terminal (top or bottom) 1...25 mm² flexible |
| Terminal tightening torque | 3.5 N.m top or bottom |
| Width | 72 mm |
| Height | 82 mm |
| Depth | 72 mm |
| Parameter | Value |
|---|---|
| Operating ambient temperature | -25...60 °C |
| Storage ambient temperature | -40...85 °C |
| IP degree of protection | IP20 |
| Pollution degree | 2 conforming to IEC 61008-1 |
| Relative humidity | 95 % at 55 °C |
| Tropicalisation | 2 |
| Parameter | Value |
|---|---|
| Standards | IEC 61008-1 |
The EZ9R34440 is a 4-pole Type AC RCCB from the Schneider Easy9 range, rated for 40 A switching current with a 30 mA earth-leakage sensitivity.
Alternative models and sibling configurations in the same Schneider Electric series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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