DZ74-63 Series 1P 10A Mini Circuit Breaker Switch

DZ74 1P Circuit Breaker 10A Electricians, control panel builders, and automation technicians utilize this 10A miniature circuit breaker (MCB) to safeguard electrical wiring and equipment against damaging overloads and short circuits. Consequently, it instantly interrupts the electrical flow when current exceeds safe operating thresholds. Therefore, this DIN rail-mounted safety switch serves as a fundamental protection component in household distribution boards, industrial control panels, and multi-tier sub-circuit systems.

Key Features:

• Reliable Thermal-Magnetic Tripping: Built with a highly responsive dual-action mechanism to handle long-term thermal overloads and instantaneous short-circuit conditions.
• Standard DIN Rail Installation: Engineered for rapid, toolless snap-on mounting directly onto standard 35mm DIN rail configurations.
• Clear Visual Status Indicator: Features a robust front-facing toggle handle with distinct markings to show the open or closed contact status at a quick glance.
• Flame-Retardant Housing: Constructed from premium, high-impact, self-extinguishing plastic to minimize fire hazards and protect internal mechanics.
• Heavy-Duty Tunnel Terminals: Equipped with deep, box-style screw clamp terminals that firmly secure solid or stranded conductors to eliminate loose contacts.

Technical Specifications:

• Model Classification: DZ74 / DZ47-63 Series style.
• Number of Poles: 1P (Single Pole).
• Rated Current (In): 10 A.
• Rated Operating Voltage (Ue): 230V / 400V AC.
• Rated Breaking Capacity: 4500 A (4.5 kA).
• Tripping Characteristic Curve: C-Type (Optimized for standard inductive and resistive loads).
• Rated Frequency: 50 Hz / 60 Hz.
• Mechanical Endurance: ≥ 10,000 operations.
• Electrical Endurance: ≥ 4,000 operations.

Mechanical Specifications:

• Mounting Arrangement: Snap-fit installation onto standard 35 mm DIN rails.
• Terminal Clamping Style: Screw-driven combination box terminals.
• Wire Cross-Section Compatibility: Fits conductors ranging from 1.5 mm² up to 25 mm².
• Ingress Protection Rating: IP20 (Touch-proof terminal design).

Dimensions:

• Module Width: ≈ 18.00 mm (Standard single-pole width footprint).
• Overall Height: ≈ 80.00 mm.
• Total Profile Depth: ≈ 75.00 mm.
• Unit Weight: ≈ 85.00 g.

Pinout and Wiring:

• Top Terminal (Line/Input): Secures the incoming live mains phase or sub-distribution busbar feed.
• Bottom Terminal (Load/Output): Connects straight to the live line routing energy to the downstream branch load.

Datasheet Reference: Download Datasheet

• DZ74 1P 10A Miniature Circuit Breaker Mechanical Outline and Tripping Performance Curves

Commonly Used in:

• Residential Consumer Units: Protecting domestic lighting strings, standard convenience outlets, and low-power entertainment electronics.
• Industrial Control Enclosures: Isolating branch supply lines for PLCs, operational instruments, cooling fans, and power supply units.
• Renewable Energy Systems: Providing reliable isolation and overcurrent checks inside AC combiner setups and sub-inverter circuits.

Applications:

• Overcurrent Fault Interruption: Supplying precise point-of-load isolation to prevent structural wiring overheating. However, clamping loose or undersized cables into the terminal chamber can create an localized resistive bottleneck and heat damage; therefore, technicians must torque terminals firmly and utilize bootlace ferrules for fine multi-strand wire cores.

Equivalent Models:

• DZ74 1P 16A Circuit Breaker: A physically identical alternative offering a higher 16A current handling floor for heavier appliances.
• DZ74 2P 10A Circuit Breaker: A dual-pole version designed to simultaneously disconnect both Live and Neutral paths across a 10A line loop.

Package Includes:

• 1 × DZ74 1P Miniature Circuit Breaker (10A)