Premium three-pole modular circuit breaker with 63A capacity, 36kA breaking power, C curve protection, and IP20 finger-safe terminals for reliable 400V circuit protection.
The Legrand DX³ three-pole modular thermal-magnetic circuit breaker (Model 410027) is engineered to provide reliable protection and isolation of 400V~ circuits up to 63A. This premium electrical protection device features a robust 36kA breaking capacity at 400V and incorporates advanced C curve tripping characteristics that deliver optimal safety and operational flexibility. The circuit breaker is designed with IP20 finger-safe terminals that comply with IEC/EN 60529 standards, ensuring secure connections and protection against solid bodies larger than 12.5mm.
This DX³ circuit breaker is constructed with a built-in depth of 47mm and operates across a wide ambient temperature range of -25°C to 70°C, making it suitable for diverse installation environments. The device features a red/green mechanical indicator that clearly displays the status of contacts (open or closed), along with a convenient label holder for circuit identification. With a rated insulation voltage of 500V and impulse withstand voltage of 6kV, this circuit breaker meets stringent international standards including IEC 60947-2.
The product supports copper cable connections from either the top or bottom side and can be equipped with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories for enhanced functionality. The halogen-free design demonstrates environmental consciousness, and the device complies with all substance-restriction requirements. Mounting on DIN rail is standard, with a width of 4.5 modular spacings (80.1mm) and height of 127.5mm, making it compatible with standard electrical panels and switchboards.
Key Features
- 36kA breaking capacity at 400V with IEC 60947-2 compliance
- C curve tripping characteristic with short-circuit threshold between 315A and 630A
- IP20 finger-safe terminals protecting against solid bodies larger than 12.5mm
- Red/green mechanical indicator displaying open/closed contact status
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules and accessories
- Halogen-free design with environmental consciousness
- Wide ambient operating temperature range -25°C to 70°C
- DIN rail mounting with 4.5 modular spacing width
- Rated insulation voltage 500V and impulse withstand voltage 6kV
- Top or bottom copper cable supply connection options
Technical Specifications
| Specification |
Value |
| Product Reference | 410027 |
| EAN Code | 3245064100274 |
| Brand | Legrand |
| Series | DX³ |
| Number of Poles | 3 poles |
| Rated Current | 63 A |
| Rated Voltage | 400 V AC |
| Release Characteristic | C curve |
| Breaking Capacity at 400V | 36 kA |
| Breaking Capacity at 230V | 72 kA |
| Short-Circuit Tripping Threshold | 315A to 630A (5 In to 10 In) |
| Rated Insulation Voltage | 500 V |
| Impulse Withstand Voltage | 6 kV |
| Degree of Protection | IP20 |
| Built-in Depth | 47 mm |
| Width in Modular Spacing | 4.5 modules |
| Physical Width | 80.1 mm |
| Physical Height | 127.5 mm |
| Physical Depth | 79.2 mm |
| Connectable Conductor Cross Section (Solid-core) | 1.5-50 mm² |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-35 mm² |
| Ambient Temperature Operating Range | -25°C to 70°C |
| Storage Temperature Range | -40°C to 70°C |
| Frequency | 50-60 Hz |
| Nominal Voltage Range | 360-440 V |
| Degree of Impact Strength | IK02 |
| Pollution Degree | 3 |
| Connection Type | Screwed terminal |
| Supply Direction | Top or bottom |
| Mounting Method | DIN rail |
| Colour | Grey |
| RAL Number | 7035 |
| Halogen Free | Yes |
| Flush-mounted Installation | Yes |
| Additional Equipment Possible | Yes |
| Concurrent Switching of Neutral | No |
| Label Space Available | Yes |
| Mechanical Indicator | Red/Green status display |
| Carbon Footprint (Manufacturing) | 5.755 kg CO₂ eq. |
| Standards Compliance | IEC 60947-2, IEC/EN 60529 |
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