YCB9NZF-40AP Smart Circuit Breaker | CNC Electric
YCB9NZF-40AP Smart Circuit Breaker
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YCB9NZF-40AP Smart Circuit Breaker
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  • YCB9NZF-40AP Smart Circuit Breaker
  • YCB9NZF-40AP Smart Circuit Breaker
  • YCB9NZF-40AP Smart Circuit Breaker
  • YCB9NZF-40AP Smart Circuit Breaker
  • YCB9NZF-40AP Smart Circuit Breaker
  • YCB9NZF-40AP Smart Circuit Breaker
  • YCB9NZF-40AP Smart Circuit Breaker
  • YCB9NZF-40AP Smart Circuit Breaker
  • YCB9NZF-40AP Smart Circuit Breaker
  • YCB9NZF-40AP Smart Circuit Breaker
YCB9NZF-40AP Smart Circuit Breaker Featured Image

YCB9NZF-40AP Smart Circuit Breaker

Ideal for industrial, commercial, and building applications, the YCB9NZF-40 IoT miniature circuit breaker delivers smart, reliable power protection. Monitor 10+ electrical parameters (voltage, current, temperature, leakage, etc.) in real time, with 13 customizable protection functions (over-voltage, under-voltage, overload, high-temperature, etc.) that trigger alarms or trips. Built to IEC standards, it boasts 6kA short-circuit breaking capacity and 15,000+ mechanical operations for long-term durability. Connect via RS485/Wi-Fi, manage up to 16 devices through a gateway, and customize ratings (20A/40A) to fit your load needs. Streamline operations, reduce downtime, and enhance safety—your smart distribution partner.

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Product Details

General

YCB9NZF-40 series IoT miniature circuit breakers are used in low-voltage terminal distribution networks in industrial, commercial, civil buildings and infrastructure in indoor buildings and similar places. IoT miniature circuit breakers are used in conjunction with intelligent gateways to monitor key electrical parameters of power lines, such as voltage, current, power, temperature, leakage, energy consumption, etc.In real time, and have functions such as remote control, abnormal warning, accident tripping alarm, power metering statistics, and fault location.

Type designation

YC B 9N ZF - 40 AP 1P+N 20A RS485 AC
 
YC B 9N ZF 40 
Company code Category Code Design Serial Number Smart Circuit Breaker Frame Rating
YC B 9N ZF 40 

 

AP 1P+N 20A RS485 AC
   Auxiliary  Code Number of poles Rated  Current    Communication  Method Residual Current Protection Type
AP: Automatic Reclosing;
BZ: Semi - automatic;
APE: With PE Line
1P+N Preferred: 20, 40;
(Other specifications
can be customized)
 1.RS485
2.Wif
AC  Type,AType,B  Type

Function parameters

Serial Number Protection Function Tripping Type Factory
Default Value
Parameter Setting Setting Value Factory Default
Value for Setting
Over-voltage Protection OffIAlarm/Trip Trip Over-voltage Setting 250-350V 280V
Over-voltage Delay 0-10s 3s
Under-voltage Protection OffIAlarm/Trip Alarm Under-voltage Setting 110-200V 165V
Under-voltage Delay 0-10s 3s
Overload Protection OffIAlarm/Trip Trip Overload Setting 0.6ln-In In
Phase-failure Delay 0-10s 3s
High-temperature
Protection
OffIAlarm/Trip Alarm High -temperature
Setting
60-100℃ 80℃
High -temperature Delay 0-10s 5s
Pre -warning Function Off/On On Pre-warning Proportion 90-100% 95%
Alarm Enable Off/On On --- --- ---
Over-power Protection OffIAlarm/Trip Off Over-power Value 5-50KW 2KW
Over-power Delay 0-10s 5s
Under-power Protection OffIAlarm/Trip Off Under-power Value 5-50KW 2KW
Under-power Delay 0-10s 5s
Timing Control Set/Off Off --- --- ---
10  Automatic Closing Off/On Off --- --- ---
11  Leakage Protection OffIAlarm/Trip Trip Leakage Setting Value 30-100mA    (AC
type),30mA(A
type/B type)
30mA
Non -actuation Time ~0.06s(AC type),
0-0.2s(A type/B
type)
---
12  Leakage Self-check Yes(A type/B
type)
--------
13  Manual-Automatic Integrated Control Yes --------

• “/” means no function, “---” means no parameter

• Trip type notes:

Off: turn off this function, when the protection action value is reached, the product will not protect;

Alarm: when the protection action value is reached, the product will only alarm but not trip;

Trip: when the protection action value is reached, the product will trip.

Technical Data

ltem Product Model
Standards Complied with IEC/EN3024,IEC/EN61009-1
Number of Poles 1P+N
Rated Voltage Single -phase AC230V,50Hz
Rated Current 20A,40A(Other specifications can be customized)
Tripping Type C type (Other types can be customized)
Short-Circuit Breaking Capacity Icu=Ics =6kA
Mechanical Life >15000 operations
Electrical Life >6000 operations
Closing Time <1.5s
Opening Time <1.0s
Metering Accuracy 1.0 
Leakage Trip Value (30-100mA)AC type,30mA(A type),30mA(B type)

Operation button description

RS485 interface and network configuration description
 
YCB9NZF-40AP Smart Circuit Breaker Product Brochure1
 
YCB9NZF-40AP Smart Circuit Breaker Product Brochure2
 

1. Enter the gateway network configuration mode (host mode), the sub- device indicator light flashes blue, and enters the network configuration state;

2. Press the sub-device network configuration button to configure the network. The sub-device indicator light flashes red when the current sub-device is successfully paired;

3. Pair sub-devices one by one;

4. After all sub-devices are paired, press the gateway “Menu” button to confirm, exit the network configuration mode, and the network configuration is completed

5. Scan the code using APP to add a device

Wi-Fi product interface and network configuration instructions

YCB9NZF-40AP Smart Circuit Breaker Product Brochure3

Interface and network configuration instructions for PE products

YCB9NZF-40AP Smart Circuit Breaker Product Brochure4

Installation and wiring

Installation dimensions

YCB9NZF-40AP Smart Circuit Breaker Product Brochure5

Product Installation

1. The device is suitable for standard 35mm rail installation. When installing, just snap the device into the rail and fix it with the buckle

2. According to the actual power distribution management and line laying design requirements,select and use the IoT modules and electrical box specifications that meet the needs, and install them in the order of the modules shown in the figure. Each module is connected with a 2PIN data cable specially made by the manufacturer.

3. The circuit breaker should be installed vertically. When the handle is in "/OFF", the contacts are in the disconnected state. When the handle

moves upward, the contacts move in the closing direction;

4. The nominal cross-sectional area of the copper wire used for connection that matches the rated current of the circuit breaker is shown in the table below.

Rated
current(A)
10  16~20 25  32  40~50 63  80 
Conductor
cross-sectionalarea(mm²)
1.5  2.5  10  16  25 
Moment(N.m) 3.5  3.5  3.5  3.5  3.5  3.5  3.5 

Transportation and storage

Transportation

During the transportation of products, they should be protected from the invasion and mixing of water, rain, snow or other harmful liquids such as chemical solvents and corrosive liquids; strong collision and extrusion between objects should be prevented;

they should be stacked according to the direction indicated on the packaging, and the number of stacking layers can be seen from the outer box of the packaging.

Storage

● Storage environment conditions: ambient temperature -10°C~+45°C;

● Relative humidity ≤90% (when ambient temperature is +20°C);

● The storage location should be dust-free and conductive dust-free;

● No corrosive, flammable and explosive gases, no rain or snow invasion;

● Dry and well ventilated;

● Stack in the direction indicated on the package,and do not stack higher than the number marked on the outer packaging box.

Product use and precautions

1. This product has RS485 as a standard communication port, which can be connected to computers and other communication devices through.

2. RS485 to USB converter to achieve information exchange and control.

3. The default baud rate of the device is 9600bps, and the required baud rate can be viewed and set through the PC.

4. Product installation and commissioning must be carried out by professional electricians.

5. This product can be customized according to user needs, please contact relevant technicians for details.

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