JCB3-63DC DC miniature circuit breaker
TECHNICAL DATA
JCB3-63DC DC Miniature Circuit Breaker: Current, Poles and Trip Curves
The JCB3-63DC DC miniature circuit breaker is listed by W9 Group for overload and short-circuit protection in direct-current circuits. The target table lists current choices from 6 A to 63 A, B / C trip curves and 1P / 2P / 3P / 4P versions. Confirm polarity, pole wiring and voltage-specific fault duty for the actual installation.
| Product code | JCB3-63DC | |||
| Pole | 1 Pole | 2 Pole | 3 Pole | 4 Pole |
| Standard | IEC/ EN 60947- 2 | |||
|
Electrical features |
Rated current In (A) | 6 , 10, 16, 20 , 25 , 32, 40, 50 , 63 | ||
| Rated voltage Ue(V) | 1P:DC250V, 2P:DC500V, 3P:DC 750V, 4P:DC1000V | |||
| Insulation voltage Ui (V) | 1000V | |||
| Rated impulse withstand voltage Uimp (V) | 4000V | |||
| Rated breaking capacity | 6 kA | |||
| Rated impulse withstand voltage( 1 . 2/ 50) Uimp (V) | 4000 | |||
| Pollution degree | 2 | |||
| Thermo- magnetic release characteristic | B Curve , C Curve | |||
|
Mechanicalfeatures |
Electrical life | ≥1500 | ||
| Mechanical life | ≥20000 | |||
| Contact position indicator | Yes | |||
| Protection degree | IP 20 | |||
| Reference temperature for setting of thermal element(℃) | 30 | |||
| Ambient temperature (with daily average ≤35℃) | – 5…+40 ℃ | |||
| Storage temperation (℃) | -25 . . . + 70 ℃ | |||
|
Installation |
Terminal connection type | Cable/ U-type busbar/ Pin-type busbar | ||
| Terminal size top/ bottom for cable | 25mm2 / 18-4 AWG | |||
| Terminal size top/ bottom for busbar | 10mm2 / 18- 8 AWG | |||
| Tightening torque | 2. 5 N*m / 22 In-Ibs. | |||
| Mounting | On DIN rail EN 60715 ( 35mm) | |||
|
Combination with accessories |
Auxiliary contact | Yes | ||
| Shunt release | Yes | |||
| Under voltage release | Yes | |||
| Alarm contact | Yes | |||
SELECTION GUIDE
How to Select a JCB3-63DC DC MCB by Pole Voltage and Polarity
Specify the current, trip curve, DC voltage, pole wiring, polarity, fault level and accessory requirements when requesting a JCB3-63DC quotation from W9 Group.
Select the DC current and curve
Use the table current choices and confirm the selected B or C curve against load startup and protection coordination.
Match voltage and pole wiring
Select the pole arrangement for the system voltage and obtain the required series connection and earthing diagram.
Confirm polarity and reverse current
The title and body give inconsistent polarity descriptions. Request the exact terminal marking and allowed current direction for the supplied version.
Check fault duty and accessories
Confirm DC fault capacity, circuit time constant where applicable, installation conditions and each ordered accessory code.
ABOUT W9 GROUP
W9 Group JCB3-63DC DC Circuit Breaker Supply and Support
Zhejiang W9 Group Technology Co., Ltd. supplies low-voltage electrical products. For a JCB3-63DC enquiry, contact W9 Group about configuration and matching product documents.
RELATED RESOURCES
JCB3-63DC DC MCB Wiring, Polarity and Fault-Rating Document Requests
Use technical support and related products to specify JCB3-63DC. Request a datasheet and wiring diagram matching the selected JCB3-63DC configuration.
RELATED PRODUCTJCB1-125DC DC miniature circuit breakerCompare function and configuration; request separate model ratings
DOCUMENTSW9 Group download centreRequest the current document for your quoted JCB3-63DC variant
BUYER FAQ
JCB3-63DC DC MCB FAQs: Pole Wiring, DC Voltage and Breaking Capacity
Find answers about JCB3-63DC selection, configuration and ordering.
Which currents are listed for JCB3-63DC?
The electrical table lists 6, 10, 16, 20, 25, 32, 40, 50 and 63 A. The prose mentions a broader lower-end range; use a confirmed order schedule for any additional current.
Does every pole version have the highest DC voltage rating?
No. The table assigns different DC voltages to different pole arrangements. Confirm the required pole connection and operating voltage for the selected version.
Is JCB3-63DC polarity sensitive?
The native title calls it polarity DC while body prose says it is not polarity sensitive. Confirm the actual terminal markings, wiring diagram and permitted current direction before installation.
What does the listed breaking capacity establish?
The table lists 6 kA. Confirm the applicable DC voltage, pole arrangement, test conditions and project fault duty for the ordered breaker.
Does the DC breaker replace residual-current or insulation monitoring?
Do not infer those functions from overload and short-circuit protection. Confirm any additional monitoring or protection required by the system design.
Which standard and accessories should be specified?
The summary and body use different standard references. Request the exact-model test documents and confirm each auxiliary contact, alarm or release by its matching accessory code.
What is needed for a JCB3-63DC quotation?
Send the required configuration, quantity, destination market and document requirements. Ask W9 Group to confirm price, minimum order quantity, samples and lead time for the selected configuration.
PRODUCT ENQUIRY
Request a JCB3-63DC DC Miniature Circuit Breaker Quotation
Tell W9 Group your current, trip curve, DC voltage, pole wiring, polarity, fault level and accessory requirements, quantity and destination market so the selected configuration can be identified.