DZ47LE-63 RCCB Residual Current Circuit Breaker
This circuit breaker is a multifunctional low-voltage protection device designed for distribution systems with AC 50Hz, rated voltage below 400V, and rated current below 63A. It is suitable for industrial, commercial, and civilian power networks.
Its core functions integrate security protection, equipment protection, and intelligent monitoring, which can significantly improve the reliability and operation efficiency of the distribution system.
Core functional highlights:
1. Safety protection
1) Personal safety assurance: Through high-precision residual current detection technology (RCD), indirect contact protection is provided, effectively reducing the risk of electric shock.
2) Equipment and line protection: Integrated overload and short circuit dual protection mechanism, accurately cutting off fault current, avoiding electrical fires and equipment damage.
2. Intelligent monitoring and early warning
1) Leakage pre-alarm function: Real-time monitoring of residual current in the circuit. When abnormal leakage (such as insulation degradation) is detected, an alarm signal is output through a passive normally open contact (dry contact). It can be linked to SCADA, fire protection system or sound and light alarm device without an external power supply to achieve early warning of faults and ensure power supply continuity.
2) Flexible threshold configuration: supports custom setting of leakage alarm values, adapting to sensitivity requirements of different scenarios (such as 30mA/100mA adjustable).
3. Diversified control ability
Line and motor control: suitable for occasional switching operations of distribution lines or intermittent start-stop control of small motors, meeting the requirements of nonfrequent operation scenarios.
Typical application scenarios:
1) Key power supply areas: places with high requirements for power continuity, such as data centers and hospital IT systems, have alarm nontrip mechanisms to avoid accidental power outages.
2) Equipment protection: Front-end protection for devices such as frequency converters and outdoor electrical cabinets that are susceptible to electrical leakage or environmental impact.
3) Intelligent operation and maintenance: By connecting to the building management system (BMS) through touch signals, remote monitoring and preventive maintenance can be achieved.
Product advantages:
1) High reliability: thermal magnetic double trip structure, balancing overload delay protection and short-circuit instantaneous action characteristics.
2) Flexible expansion: an optional communication module, supporting remote status monitoring and fault diagnosis.
3) Easy installation: Standardized modular design, compatible with mainstream rail installation, suitable for compact distribution boxes.
Summary: This circuit breaker is designed with the concept of "warning first, safety oriented", which ensures the safety of personnel and equipment while maximizing the stability of system operation. It is the preferred protective device for modern intelligent distribution systems.
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Product Description
Product function instruction
Scope of application
♦ Suitable for distribution network circuits with AC 50Hz, rated working voltage of 400V and below, and rated current of 63A and below;
♦ Provide indirect contact protection for individuals;
♦ Provide leakage protection for equipment;
♦ Overload and short circuit protection for lines and power equipment;
♦ Under normal circumstances, it can be used for infrequent switching of circuits and infrequent starting of motors.
♦ This circuit breaker can monitor the residual current value and output passive normally open contacts for alarm without tripping.
♦ This circuit breaker has a selectable leakage alarm without a tripping function.
1. When the leakage protection function is turned on, the leakage alarm light does not light up. When the leakage current in the circuit reaches the operating value, the product will trip within the specified time;
2. When the leakage protection function is turned off: When leakage current is generated in the circuit, the leakage alarm light is always on, but the product does not trip. At this time, the circuit should be maintained in a timely manner.
♦ Compliant with standards:
International standards: IEC61009-1;
National standard: GB/T16917.1;
♦ In line with the technical specifications for bidding of State Grid Xizang Electric Power Co., Ltd., the small leakage circuit breaker shall have the function of leakage exit.
Working condition
◇ Altitude: ≤2000m;
◇ Environmental temperature:-5 ℃~+40 ℃, with an average value not exceeding+35 ℃ over 24 hours;
◇ Environmental humidity: not exceeding 50% at a maximum ambient temperature of+40 ℃, with higher relative humidity possible at lower temperatures, such as reaching 90% at 20 ℃, taking into account condensation on the product surface due to temperature changes;
◇ Installation conditions: The external magnetic field of the installation site should not exceed 5 times the geomagnetic field in any direction. Residual current operated circuit breakers should generally be installed vertically, with the handle facing upwards to connect to the power supply. There should be no significant impact or vibration at the installation site;
◇ Installation category: II;
◇ Installation type: TH35-7.5 standard guide rail installation is adopted;
◇ Pollution level: 2;
◇ Wiring method: Use screws to tighten the wiring.
Specifications and parameters
♦ Poles number: 1P+N, 2P, 3P, 3P+N, 4P;
♦ Rated current In (A): 6,10,16,20,25,32,40,50,63;
♦ Rated working voltage Ue: 230V, 400V;
♦ Rated insulation voltage Ui: 500V;
♦ Rated breaking capacity Icu (kA): 4 (6A~40A, Type C), 3 (50A, 63A, Type C), 4.5 (6A~63A, Type D);
♦ H-type: 6 (6A~63A, C type, D type);
♦ Rated residual connection and disconnection capacity l △ m: 2000A;
♦ Rated residual operating current l △ n (mA): 30;
♦ Rated residual non operating current l △ no (mA): 15,25,50150;
♦ Mechanical lifespan: 2000 cycles;
♦ Electrical lifespan: 2000 cycles;
♦ Operating frequency: 120 times/hour;
♦ Electrical accessories: OF,SD;
♦ Protection level: IP20;
♦ Installation method: embedded guide rail;
♦ Wiring method: Wiring terminals with clamps;
♦ Wiring capability: Allow wires below 16mm to be connected;
♦ Tightening torque: 2N • m.
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