Contattore,interruttore automatico,inverter solare,contatore elettrico,batterie solari
Chint DZ108-20 is a interruttore automatico scatolato (MCCB), mainly designed for the protection of electric motors and power distribution lines.
Ambito di applicazione
Applicable to AC circuits with a frequency of 50Hz or 60Hz, rated voltage up to 380V and below, and rated current ranging from 0.1A to 20A. It can serve as overload and short-circuit protection for electric motors, as well as overload and short-circuit protection for lines and power supply equipment in power distribution networks. Additionally, it can be used for infrequent switching of lines and infrequent starting and switching of electric motors.
Model Significance
DZ stands for molded case circuit breaker; 108 è il numero di serie del progetto; 20 represents the rated current of the frame size. The subsequent combination of numbers indicates the auxiliary contact combination code and service category code, ecc.
Caratteristiche strutturali
Equipped with a bimetallic strip inverse-time delay release and an electromagnetic instantaneous release. The overload release is provided with a temperature compensation device. The operation mode is push-button control, adopting front-panel wiring and front-panel mounting, with an installation clamp plate, which can be directly mounted on a standard 35mm-wide guide rail.
Main Technical Parameters
Frame Current: 20UN
Setting Current Range: Multiple specifications are available, including 0.1-0.16A, 0.16-0.25UN, 0.25-0.4UN, 0.4-0.63UN, 0.63-1UN, 1-1.6UN, 1.6-2.5UN, 2-3.2UN, 2.5-4UN, 4-6.3UN, 5-8UN, 6.3-10UN, 8-12.5UN, 10-16UN, 14-20UN, ecc.
Numero di poli: 3 poles
Rated Insulation Voltage: 660V
Contatti ausiliari: Usually 1NO+1NC (one normally open and one normally closed)
Price Information
The promotional price on Chint Electric official mall is 53.38 CNY per unit, and the market price is 124.13 CNY per unit. Contact via WhatsApp: 0086-13811255435.
Chint DZ108-20 is a 3-pole molded case circuit breaker dedicated to motor protection, focusing on the overload and short-circuit protection of motors. Chint DZ47-63 is a multi-pole miniature circuit breaker (MCB), mainly designed for the protection of power distribution and lighting lines. The two products are significantly different in core positioning, parameters and structure. The following is a structured comparison and selection suggestion:
Core Difference Overview Table
| Dimensione di confronto | Chint DZ108-20 | Chint DZ47-63 |
| Product Type | Molded case circuit breaker dedicated to motor protection | Miniature circuit breaker (MCB) for power distribution/lighting protection |
| Core Application | Specialized for overload and short-circuit protection of motors, suitable for infrequent starting/switching of motors | Applicable for overload and short-circuit protection of power distribution lines and lighting loads; not suitable for direct protection of motors |
| Frame Current | 20UN | 63UN |
| Rated Current Range | 0.1–20A (multi-gear fine adjustment, suitable for low-power motors) | 1–63A (B/C/D type curves, covering a wider range of power distribution scenarios) |
| Numero di poli | Fixed 3 poles | 1P, 2P, 3P, 4P optional |
| Caratteristica di intervento | Bimetallic inverse-time + electromagnetic instantaneous, with temperature compensation, dedicated for motor protection (10–14In instantaneous tripping) | C type (5–10In, suitable for lighting/general loads) and D type (10–14In, suitable for power loads) optional |
| Capacità di interruzione | 6IL | 6kA for 1–32A; 4.5kA for 50–63A |
| Tensione nominale | Rated working voltage 380V, rated insulation voltage 660V | Rated working voltage 400V, rated insulation voltage 600V |
| Structure & Operation | Push-button operation, front-panel wiring/mounting, standard 1NO+1NC auxiliary contacts | Handle operation, guide rail mounting, auxiliary contacts and other modules are optional |
| Scenari applicativi tipici | Main protection of low-power three-phase asynchronous motors such as water pumps and fans | Protection of residential/commercial lighting, socket circuits and distribution box branches |
Key Detail Analysis
- Different Protection Positioning (Core Difference)
– DZ108-20: The release is specially designed for motors. Its inverse-time characteristic matches the motor overload curve. The instantaneous tripping multiple (10–14In) can avoid the motor starting inrush current, and the temperature compensation ensures protection accuracy.
– DZ47-63: The C-type curve is suitable for lighting/general loads, and the D-type curve can be used for power distribution. However, it lacks the temperature compensation and special release adjustment necessary for motor protection. Direct application to motors may cause misoperation or protection failure.
- Specification & Adaptability
– DZ108-20: It has multiple fine-tuning gears for current (per esempio., 0.1–0.16A, 14–20A, ecc.), suitable for low-power motors with a current of 0.1–20A. The fixed 3-pole design meets the requirements of three-phase motors.
– DZ47-63: It features flexible pole numbers and tripping curves, covering power distribution scenarios with a current of 1–63A. It has more flexible installation and wiring methods, suitable for civil and general industrial power distribution.
- Structure & Accessories
– DZ108-20: Push-button operation, with built-in 1NO+1NC auxiliary contacts, facilitating the linkage of motor control circuits.
– DZ47-63: Handle operation, auxiliary contacts, shunt release/undervoltage release and other accessories are optional, making it more suitable for the expansion needs of power distribution systems.
