10KA AC Miniature Circuit Breaker

For demanding applications where higher fault currents and enhanced safety are non-negotiable, the CDADA DAB7-63H 10KA AC Miniature Circuit Breaker delivers industrial-grade protection in a miniature format. Engineered by Shanghai DADA Electric CO., LTD., this 10kA miniature circuit breaker is designed for group panels, distribution boards in residential, commercial, and light industrial settings—offering reliable thermal (overload) and electromagnetic (short-circuit) protection across 8 current ratings (6A–63A) and 1P/2P/3P configurations.

Certified to CE, CB, ASTA, and SEMKO, it meets stringent global safety standards. With an advanced 13-plate arc chamber, silver-containing contact alloy, and dual connection options (PIN/FORK), the DAB7-63H ensures faster arc extinction, lower heat loss, and extended electrical life—even under frequent switching or high ambient temperatures.

Key Specifications

Model: DAB7-63H Series

Type: AC Miniature Circuit Breaker (MCB)

Breaking Capacity: 10kA @ 230/400V AC

Poles: 1P, 2P, 3P

Rated Current (In): 1A,2A,3A,4A,5A,6A, 10A, 16A, 20A, 25A, 32A, 40A, 63A

Operating Temperature: –40°C to +50°C

Certifications: CE, CB, ASTA, SEMKO

Key Design Features:

13-plate arc chamber → ultra-fast arc splitting & extinction

Silver-alloy contacts → lower resistance, longer life

Dual terminal options: PIN or FORK (line & load side)

Visual ON/OFF/trip indicator window

Wide ergonomic handle for easy operation

Flame-retardant, anti-yellowing housing (UL94 V-0 equivalent)

Super torque screws (tested to 3 Nm) with + / – cross-functional heads

DIN rail latch with dual locking positions → secure mounting

Technical Data Sheet

Why Choose CDADA AC MCB 10kA?

★ Industrial-Grade Performance in Miniature Form

While standard MCBs offer 6kA, the 10kA rating of DAB7-63H makes it suitable for locations closer to the main supply—such as basement distribution rooms, commercial floors, or light industrial workshops—where prospective fault currents are higher.

★ Enhanced Safety & Durability

● Unflaming shell resists ignition and discoloration

● Double quenching grid prevents hot gas ejection

● Trip-free mechanism ensures disconnection even if handle is held ON

★ Lower Lifetime Cost

Silver-alloy contacts and optimized terminals reduce thermal losses and contact welding, extending service life—especially in high-cycle applications.

★ Global Acceptance

With ASTA (UK), SEMKO (Nordic), CE (EU), and CB (global), CDADA MCBs are accepted in over 70 countries—ideal for export-oriented panel builders.

★ Installer-Friendly Design

★ Wider handle = easier operation

★ Cross-functional screws = no dropped fasteners

★ Clear status window = instant visual diagnostics

★ High-strength cartons, pallet protection, good for long-distance export transport

★ Quick delivery time for decent orders.

Ideal Applications

Commercial Buildings: Floor distribution panels, server rooms, retail outlets

Light Industry: Machine control circuits, small motor feeders, workshop sockets

Public Infrastructure: Schools, hospitals, government offices

High-Density Residential: Apartment blocks with centralized metering

Export Panels: For projects requiring international certification

Frequently Asked Questions

Q1: What’s the difference between 6kA and 10kA MCBs?

A1: 10kA MCBs can safely interrupt higher fault currents—making them suitable for installations closer to the transformer or main incomer, where short-circuit levels exceed 6kA. Use 10kA in commercial/industrial sub-panels; 6kA is typically sufficient for end circuits in homes.

Q2: Is the 10KA AC Miniature Circuit Breaker available in 3P for three-phase systems?

A2: Yes! The DAB7-63H is available in 1P, 2P, and 3P—perfect for three-phase lighting, HVAC, or machinery circuits.

Q3: What does “silver-containing alloy on contacts” mean for performance?

A3: It reduces contact resistance, minimizes arcing during switching, and extends electrical life—especially important in circuits with frequent operation or inductive loads.

Q4: Can I use fork-type connectors with this MCB?

A4: Absolutely! It supports both PIN and FORK terminals on line and load sides—enabling flexible, low-profile wiring and shorter cable runs.

Q5: Why choose CDADA over other 10kA MCB brands?

A5: CDADA stands out because:

● True 10kA rating with full certifications (not just claimed)

● Advanced arc chamber (13 plates) for superior interruption

● Dual terminal options rarely found in this class

● –40°C to +50°C operation—wider than many competitors

● OEM-ready: consistent quality, English support, bulk pricing