Technical Review: Delixi DZ47s 1P+NB 32A 6KA 230VAC DZ47SN5B32 Miniature Circuit Breaker - Selection Guide & Specs
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Overview: Solving Electrical Protection Challenges
The Delixi DZ47s 1P+NB 32A 6KA 230VAC DZ47SN5B32 miniature circuit breaker addresses critical electrical safety concerns in residential, commercial, and light industrial applications. This protective device eliminates the risk of electrical fires and equipment damage by automatically disconnecting circuits during overload or short-circuit conditions. As a Type B MCB, it provides optimal protection for resistive loads like lighting circuits, heating elements, and general-purpose outlets, making it an essential component in modern electrical distribution systems.
Technical Specifications Analysis
| Specification | Value | Description |
|---|---|---|
| Model Number | DZ47SN5B32 | Delixi DZ47s series, 1P+N, Type B, 32A |
| Number of Poles | 1P+N (1 Pole + Neutral) | Single phase with neutral protection |
| Rated Current (In) | 32 Amperes | Continuous current carrying capacity |
| Tripping Characteristic | Type B | Trips at 3-5 times rated current (instantaneous) |
| Breaking Capacity (Icn) | 6 kA | Maximum short-circuit current it can interrupt |
| Rated Voltage | 230V AC | Operating voltage range |
| Rated Frequency | 50/60 Hz | Compatible with standard AC power systems |
| Mounting | DIN Rail (35mm) | Standard industrial mounting system |
| Wiring Capacity | 1-2.5 mm² | Compatible conductor cross-section |
| Protection Functions | Overload & Short Circuit | Thermal-magnetic protection mechanism |
The DZ47s series features a compact design with reliable thermal-magnetic tripping mechanism. The thermal element provides overload protection with inverse time delay characteristics, while the magnetic element ensures instantaneous tripping during short-circuit events. This dual protection system makes it ideal for protecting electrical wiring and connected equipment from damage.
Buying Considerations: Selection Guide
When selecting the Delixi DZ47s 32A MCB for your application, consider these critical factors:
- Load Type Matching: Type B MCBs (3-5x In) are specifically designed for resistive loads. For motor circuits or applications with higher inrush currents, consider Type C MCBs (5-10x In) or Type D MCBs (10-20x In).
- Current Rating Selection: The 32A rating suits circuits with maximum continuous load of approximately 7.36kW at 230V. Calculate your actual load requirements and select accordingly from the DZ47s range (6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A).
- Breaking Capacity Requirements: The 6kA breaking capacity is suitable for most residential and light commercial applications. For industrial settings with higher fault levels, consider MCBs with 10kA or higher breaking capacity.
- Installation Environment: Ensure compatibility with your existing distribution board and DIN rail system. The 1P+N configuration provides both phase and neutral protection, offering enhanced safety compared to single-pole breakers.
- Certification & Standards: Verify compliance with relevant electrical standards (IEC 60898-1) for your region and application requirements.
Frequently Asked Questions
Q1: What is the difference between Type B and Type C MCBs?
Type B MCBs (like the DZ47SN5B32) trip at 3-5 times rated current and are ideal for resistive loads (lighting, heating). Type C MCBs trip at 5-10 times rated current and are better suited for circuits with moderate inrush currents (motors, transformers). The Delixi DZ47s series offers both B and C types to match different load characteristics.
Q2: Can I use this 32A MCB for a 30A circuit?
Yes, the 32A rating provides a small safety margin above 30A, which is acceptable and common practice. The MCB should be rated equal to or slightly higher than the circuit's maximum expected load. However, the circuit wiring must also be rated for at least 32A to ensure complete protection.
Q3: What does "1P+N" mean in the model designation?
"1P+N" indicates a single-pole breaker with neutral protection. This means both the phase (live) and neutral conductors are protected and disconnected during tripping. This provides enhanced safety compared to standard 1P breakers that only disconnect the phase conductor. The Delixi DZ47s 1P+NB offers complete circuit isolation for improved electrical safety.
