描述
一、产品定位与核心功能
URAX-E1 2TLA020072R0600是ABB推出的紧凑型电子式剩余电流保护装置（RCCB/RCD，Residual Current Circuit Breaker），属于System pro M compact系列，专为低压配电系统设计，提供过载保护、短路保护及剩余电流（漏电）保护功能。其核心优势在于：
高灵敏度漏电保护：支持30mA/300mA/500mA等多档剩余电流动作值，满足不同场景安全需求（如人身触电防护、火灾预防）。
集成化设计：将断路器（MCCB）与漏电保护模块一体化，节省安装空间，简化配电系统设计。
智能化功能：可选配通信模块（如Modbus-RTU），支持远程监控与故障诊断。
二、关键技术参数
参数类别详细描述
型号命名规则URAX-E1：系列代号
2TLA020072R0600：订单号，包含产品版本、规格等信息（需通过ABB工具解码）
额定电流（In）63A（标准型号），支持其他规格（如40A、80A，需确认具体型号）
极数2P（两极，适用于单相230V系统）或4P（四极，适用于三相400V系统，需确认型号）
剩余电流类型AC型（检测正弦交流剩余电流）或A型（检测正弦交流+脉动直流剩余电流，需确认型号）
剩余电流动作值30mA（人身触电保护）、300mA（防火保护）、500mA（特殊工业场景）等可调（依型号）
分断能力10kA（依标准IEC 60947-2，满足一般工业与商业配电需求）
短路保护集成热磁式或电子式短路脱扣器，动作时间<0.1s（依负载类型调整）
过载保护长延时反时限特性，动作时间依电流倍数自动调整（如1.45×In时2h内跳闸）
通信接口标配无通信功能，可选配Modbus-RTU模块（需额外订购）
机械寿命≥10,000次操作（合分闸）
电气寿命≥5,000次操作（额定电流下）
防护等级IP20（标准），可选IP40（防尘防水，需确认型号）
工作温度-25°C至+55°C（存储）；-5°C至+45°C（运行，高海拔或高温环境需降额使用）
认证标准IEC 60947-2、GB 16917.1、CCC、CE、UL（依销售区域）
三、核心功能详解
1.剩余电流保护（漏电保护）
AC型vs.A型：
AC型：仅检测50/60Hz正弦交流剩余电流，适用于传统照明、电机负载。
A型：在AC型基础上增加脉动直流剩余电流检测（如变频器、LED驱动电源产生的谐波），避免漏报。
应用建议：若负载包含变频器、UPS或LED灯具，优先选择A型。
动作值选择：
30mA：用于人身触电保护（如住宅、办公室插座回路），符合IEC 60364标准。
300mA：用于防火保护（如商业建筑配电干线），平衡安全与误动作风险。
500mA：用于工业场景（如电机控制回路），减少因设备启动漏电导致的误跳闸。
2.过载与短路保护
过载保护：
采用反时限特性，电流越大，动作时间越短。例如：
1.13×In：2h内不动作；
1.45×In：2h内跳闸；
7.2×In：<0.1s跳闸（短路前兆保护）。
短路保护：
电磁脱扣器瞬时动作，分断时间<10ms，限制短路电流对设备的损害。
I.Product Positioning and Core Functions
The URAX-E1 2TLA020072R0600 is a compact electronic residual current circuit breaker(RCCB/RCD)from ABB.It belongs to the System pro M compact series and is designed specifically for low-voltage power distribution systems.It provides overload protection,short-circuit protection,and residual current(leakage)protection.Its core advantages include:
Highly sensitive leakage protection:It supports multiple residual current operating levels,including 30mA,300mA,and 500mA,meeting safety requirements in various scenarios(such as personal electric shock protection and fire prevention).
Integrated design:It integrates the circuit breaker(MCCB)and the leakage protection module,saving installation space and simplifying distribution system design.
Intelligent functions:An optional communication module(such as Modbus-RTU)supports remote monitoring and fault diagnosis.II.Key Technical Parameters
Parameter Category Detailed Description
Model Naming Convention URAX-E1:Series code
2TLA020072R0600:Order number,including product version,specifications,and other information(must be decoded using ABB tools)
Rated Current(In):63A(standard model);other specifications supported(such as 40A and 80A;specific model required)
Number of Poles:2P(two-pole,suitable for single-phase 230V systems)or 4P(four-pole,suitable for three-phase 400V systems;model required)
Residual Current Type:AC(detects sinusoidal AC residual current)or A(detects sinusoidal AC+pulsating DC residual current;model required)
Residual Current Operate Value:Adjustable(depending on model)to 30mA(personal shock protection),300mA(fire protection),or 500mA(special industrial scenarios)
Breaking Capacity:10kA(according to IEC standards)60947-2,meeting general industrial and commercial power distribution needs.
Short-circuit protection:Integrated thermal-magnetic or electronic short-circuit release,operating time<0.1s(adjusted by load type).
Overload protection:Long-delay inverse-time characteristic,with operating time automatically adjusted based on current multiple(e.g.,tripping within 2 hours at 1.45×In).
Communication interface:No communication function standard;a Modbus-RTU module is optional(order separately).
Mechanical life:≥10,000 operations(closing and opening).
Electrical life:≥5,000 operations(at rated current).
Protection rating:IP20(standard),optional IP40(dust and water-resistant,model required).
Operating temperature:-25°C to+55°C(storage);-5°C to+45°C(operating);derating required for use at high altitudes or high temperatures.
Certification standards:IEC 60947-2,GB 16917.1,CCC,CE,UL(depending on sales region)
III.Core Function Detail
1.Residual Current Protection(Leakage Protection)
AC Type vs.A Type:
AC Type:Detects only 50/60Hz sinusoidal AC residual current and is suitable for traditional lighting and motor loads.
A Type:In addition to the AC Type,it also detects pulsating DC residual current(such as harmonics generated by inverters and LED driver power supplies)to avoid false alarms.
Application Recommendation:If the load includes inverters,UPS,or LED lamps,the A Type is preferred.
Operation Value Selection:
30mA:For personal electric shock protection(such as residential and office socket circuits),compliant with IEC 60364.
300mA:For fire protection(such as commercial building distribution mains),balancing safety and nuisance tripping risks.
500mA:For industrial scenarios(such as motor control circuits),reducing false tripping caused by leakage during equipment startup.2.Overload and Short-Circuit Protection
Overload Protection:
Uses an inverse time characteristic.The higher the current,the shorter the operating time.For example:
1.13×In:No operation within 2 hours;
1.45×In:Trip within 2 hours;
7.2×In:Trip in<0.1 seconds(short-circuit warning protection).
Short-Circuit Protection:
The electromagnetic release operates instantaneously with a tripping time of<10ms,limiting damage to equipment caused by short-circuit currents.
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