Schneider Easy9 EZ9R66440 4P 40A 300mA Type AC RCCB
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Schneider Electric EZ9R66440 is an Easy9 4-pole RCCB rated 40A with instantaneous 300mA Type AC residual-current protection. It uses voltage-independent tripping, a left-side neutral and DIN-rail mounting. Its 300mA sensitivity is distinct from 30mA additional personal protection. Overload and short-circuit protection require appropriately coordinated external devices. Schneider Electric’s Brazil listing announces discontinuation on 31 December 2026. Regional availability remains subject to quotation.
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| Model | EZ9R66440 |
|---|---|
| Series / type | Easy9 residual current circuit breaker (RCCB) |
| Poles | 4P |
| Neutral position | Left |
| Rated current (In) | 40A |
| Earth-leakage sensitivity | 300mA |
| Residual-current class / delay | Type AC / instantaneous |
| Tripping technology | Voltage independent |
| Rated operational voltage (Ue) | 400VAC, 50/60Hz |
| Making and breaking capacity | 500A |
| Conditional short-circuit current | 6kA with coordinated Easy9 40A MCB; not standalone overcurrent protection |
| Insulation voltage (Ui) | 440VAC |
| Impulse withstand (Uimp) | 4kV |
| Surge current | 250A |
| Contact-position indicator | Yes |
| Mounting | Clip-on DIN rail |
| Comb busbar / distribution-block compatibility | Top connection |
| Connection pitch | 18mm between phases |
| Width / 9mm pitches | 72mm / 8 pitches |
| Dimensions (H × W × D) | 82 × 72 × 72mm |
| Colour | Grey RAL 7035 |
| Terminals | Top/bottom tunnel terminals: rigid 1–35mm²; flexible 1–25mm² |
| Terminal torque | 3.5Nm |
| Mechanical / electrical durability | 5,000 / 2,000 cycles (electrical at 400VAC, 50/60Hz) |
| Protection degree | IP20 |
| Pollution degree | 2 |
| Relative humidity | 95% at 55°C |
| Operating / storage ambient | −5 to +60°C / −40 to +85°C |
| Standard | IEC 61008-1 |
Schneider Easy9 EZ9R66440 4P 40A 300mA Type AC RCCB
Schneider Electric EZ9R66440 is an Easy9 4-pole RCCB rated 40A with instantaneous 300mA Type AC residual-current protection. It uses voltage-independent tripping, a left-side neutral and DIN-rail mounting. Its 300mA sensitivity is distinct from 30mA additional personal protection. Overload and short-circuit protection require appropriately coordinated external devices. Schneider Electric’s Brazil listing announces discontinuation on 31 December 2026. Regional availability remains subject to quotation.
Key specifications
- Model: EZ9R66440
- Series / type: Easy9 residual current circuit breaker (RCCB)
- Poles: 4P
- Neutral position: Left
- Rated current (In): 40A
- Earth-leakage sensitivity: 300mA
- Residual-current class / delay: Type AC / instantaneous
- Tripping technology: Voltage independent
- Rated operational voltage (Ue): 400VAC, 50/60Hz
- Making and breaking capacity: 500A
- Conditional short-circuit current: 6kA with coordinated Easy9 40A MCB; not standalone overcurrent protection
- Insulation voltage (Ui): 440VAC
- Impulse withstand (Uimp): 4kV
- Surge current: 250A
- Contact-position indicator: Yes
- Mounting: Clip-on DIN rail
- Comb busbar / distribution-block compatibility: Top connection
- Connection pitch: 18mm between phases
- Width / 9mm pitches: 72mm / 8 pitches
- Dimensions (H × W × D): 82 × 72 × 72mm
- Colour: Grey RAL 7035
- Terminals: Top/bottom tunnel terminals: rigid 1–35mm²; flexible 1–25mm²
- Terminal torque: 3.5Nm
- Mechanical / electrical durability: 5,000 / 2,000 cycles (electrical at 400VAC, 50/60Hz)
- Protection degree: IP20
- Pollution degree: 2
- Relative humidity: 95% at 55°C
- Operating / storage ambient: −5 to +60°C / −40 to +85°C
- Standard: IEC 61008-1
Official Schneider Electric datasheet
Submit your RFQ. Our team will send a quotation confirming price and availability.
| Model | EZ9R66440 |
|---|---|
| Series / type | Easy9 residual current circuit breaker (RCCB) |
| Poles | 4P |
| Neutral position | Left |
| Rated current (In) | 40A |
| Earth-leakage sensitivity | 300mA |
| Residual-current class / delay | Type AC / instantaneous |
| Tripping technology | Voltage independent |
| Rated operational voltage (Ue) | 400VAC, 50/60Hz |
| Making and breaking capacity | 500A |
| Conditional short-circuit current | 6kA with coordinated Easy9 40A MCB; not standalone overcurrent protection |
| Insulation voltage (Ui) | 440VAC |
| Impulse withstand (Uimp) | 4kV |
| Surge current | 250A |
| Contact-position indicator | Yes |
| Mounting | Clip-on DIN rail |
| Comb busbar / distribution-block compatibility | Top connection |
| Connection pitch | 18mm between phases |
| Width / 9mm pitches | 72mm / 8 pitches |
| Dimensions (H × W × D) | 82 × 72 × 72mm |
| Colour | Grey RAL 7035 |
| Terminals | Top/bottom tunnel terminals: rigid 1–35mm²; flexible 1–25mm² |
| Terminal torque | 3.5Nm |
| Mechanical / electrical durability | 5,000 / 2,000 cycles (electrical at 400VAC, 50/60Hz) |
| Protection degree | IP20 |
| Pollution degree | 2 |
| Relative humidity | 95% at 55°C |
| Operating / storage ambient | −5 to +60°C / −40 to +85°C |
| Standard | IEC 61008-1 |