Intelligent Circuit Breaker

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SEB Series Smart Miniature Circuit Breaker（Modular Type)

This smart circuit breaker is designed for single-phase (230V) and three-phase (380V) systems, with a maximum rated current of 80A. It integrates comprehensive protection—including overload, short-circuit, earth leakage, and arc fault detection—with Class 1.0 energy metering. Key features include remote monitoring and control via a standard Modbus RTU RS485 interface, a configurable I/O port for fire alarm linkage, and a mode selector for local/remote operation. Its smart capabilities for data acquisition and safety strategy configuration make it an advanced solution for modern electrical safety and energy management.

Product Details

Product Descriprion

SEB Series Smart Miniature Circuit Breaker(Modular Type) (9)

This versatile smart circuit breaker supports a wide range of configurations from 0.5P to 4P, catering to both single-phase (AC230V) and three-phase (AC380V) applications with a maximum rated current of 80A. It provides robust circuit protection with a rated breaking capacity of 6kA, surge protection up to 4kV, and complies with a rated insulation voltage of 690V.

Its core intelligence lies in advanced data acquisition and protection features. The device performs precise measurements of current, voltage, line temperature, and energy consumption with Class 1.0 accuracy. Protection is comprehensive, covering short-circuit and overload currents, over/under-voltage, phase loss, and three-phase unbalance. Critically, it offers user-configurable earth leakage protection (tripping at 20-30mA) and dual-frequency arc fault detection.

A standout feature is its communication and control flexibility. Equipped with an RS485 interface using the Modbus RTU protocol, it enables seamless integration into building management systems for remote monitoring and control. A dedicated I/O interface accepts 24V DC signals for hardwired functions like fire alarm forced tripping. The physical design includes a rocker switch to toggle between Maintenance (local, read-only) and Operation (remote, read/write) modes, manual test buttons, and a clear status indicator. By combining essential protection with smart grid compatibility, this breaker is ideal for enhancing safety, enabling energy management, and facilitating predictive maintenance in residential and commercial installations.

Application

Product Pole Count	0.5P/1P/2P/3P/4P
Product Specification	Single-Phase,Three-Phase
Rated Frequency	50/60Hz
Rated Current	80A(MAX)
Rated Voltage	AC230(Single-Phase)/AC380(Three-Phase)
Rated Insulation Voltage	690V
Rated Impulse Withstand Voltage	6KV
Rated Ultimate Short-Circuit Breaking Capacity	6KA
Rated Service Short-Circuit Breaking Capacity	6KA
Surge Protection	4KV
Fire Alarm Linkage	Fire Alarm Forced Trip
Protection Functions	Current Protection,Voltage Protection,Earth Leakage Protection,Temperature Protection,Power Limitation,Arc Fault Protection

Wiring

Rated Current (A)	Conductor Cross-Sectional Area (mm²)
1/2/4/6	1.0
10	1.5
16-20	2.5
25	4
32	6
40-50	10
63	16
80	25

Product Model Number and Meaning

SEB Series Smart Miniature Circuit Breaker(Modular Type)-10

①:Terminal Block

②:Test Button

③:Test Indicator Light

④:On/Off Status Indicator

⑤:Maintenance/Operation Status Switch Key

⑥:Power Indicator Light

⑦:Operating Lever

⑧:Communication DIP Switch

⑨:SN Code

Specification Item	Description / Function
RS485 Interface	Protocol:Standard Modbus RTU Default Settings:Broadcast address,9600 bps,Even parity.
IO Interface	Accepts 24V DC signals for local (hardwired) control and fire system interlocking,used for executing Close (ON) and Trip (OFF) commands.
Push Buttons	Test/Operate Mode Selector (rocker switch). Test (T) Button for manual operation verification.
Toggle Switch (Mode Selector)	Maintenance Mode:Read-only data access;remote control is disabled. Operation Mode:Read/Write data access;remote control is enabled.
Operating Handle / Mechanism	Indicated Positions:TRIPPED (OFF),ON (Closed). Manual Operations:Manual Trip (Open),Manual Close (ON).

Function Category	Item	Specification
Data Acquisition	Arc Fault Detection	Dual-frequency detection (high + low). (Not available for 380V rated voltage products)
	Energy Metering	Class 1.0 accuracy (per GB Standard)
	Earth Leakage Detection	Unit: mA (milliampere), Range: 0-2000mA (Residual Current Detection Function)
	Current Detection	Unit: A (Ampere), Resolution: 1 decimal place
	Voltage Detection	Unit: V (Volt), Resolution: 1 decimal place
	Line Temperature Detection	Unit: °C (Celsius), Resolution: 1 decimal place
	Open/Close Status Detection	Open status; Closed status; Open/Close locked status; Unlocked status
	Mode Switch Detection	Maintenance Mode (Local); Operation Mode (Remote)
Protection Features	Current Protection	Short-Circuit Protection
	Current Protection	Overload Protection
	Voltage Protection	Over-Voltage / Under-Voltage Protection
		Phase Loss Protection (Three-Phase)
		Three-Phase Unbalance Protection
		Phase Sequence Reversal Protection (Three-Phase)
	Earth Leakage Protection	No trip at 15mA leakage (User-configurable)
		Trip at 20-30mA leakage (User-configurable)
		Earth Leakage Circuit Breaker Self-Test (User-configurable)
	Temperature Protection	Alarm at >60°C, Trip at 75°C
	Power Limiting	User-configurable power limit
	Arc Fault Protection	Arc fault alarm and protection
External Communication	RS 485 Communication	Protocol: GB/Z19582.1-2004; Refer to RS Communication Protocol
	Communication Protocols	Modbus RTU, MQTT, DL/T645
	Firefighting Interlocking I/O Interface	Integration with fire alarm system for control, scenario interlocking, local hardwired control
	PLC Power Line Carrier	PLC carrier model requires a compatible carrier gateway for communication
	Remote Control	Remote Close/Open Operation
Safety Strategy Configuration	Breaking Capacity	Housing and actuator mechanism supplied by vendor; PCB and interfaces provided by client.
	Contacts	Actual breaking capacity ≥6000A (subject to manufacturer's specifications). Arc chute uses standardized parts with chrome-plated metal plates, thickness >0.8mm.
	Load Current	Manufacturer-supplied, silver alloy contacts. Configured per national standards for load and breaking cycle count.
	Overload Protection	Actual load current rating not less than 63A/80A. Contacts maintain normal temperature at 63A/80A load test. Electronic current limiting (IC-based).
	Short-Circuit Protection	Standard circuit breaker precision for 63A/80A overload protection. Electronic current limiting (IC-based) set below 63A/80A.
	Line/Load Terminals	Rated to 63A/80A standard, accepts up to 10mm² wire per national standard. Terminal fasteners blue-zinc plated. Internal connections use high-temperature silicone-coated braided copper wire, soldered.
	Alarm Notification	APP Push Notification
	Self-Test Function	Self-Test