SIEMENS ETU45B 西门子脱扣器是西门子框架断路器中的一个重要组成部分，主要用于保护电路免受过载、短路等故障的影响。以下是对该脱扣器的详细介绍：

一、产品概述

ETU45B作为西门子框架断路器的一个关键配件，与断路器主体配合使用，能够在电路出现异常时迅速切断电源，防止设备损坏和火灾等安全事故的发生。该脱扣器具有高精度、高可靠性和易于安装维护的特点，广泛应用于工业、商业和民用等领域。

二、产品特点

1. 高精度保护：ETU45B脱扣器能够准确检测电路中的电流变化，一旦超过设定值，立即切断电源，保护电路和设备免受过载和短路等故障的影响。
2. 高可靠性：西门子作为国际知名的电气品牌，其产品在设计和制造过程中均遵循严格的质量标准，确保脱扣器在恶劣环境下仍能稳定可靠地工作。
3. 易于安装维护：ETU45B脱扣器的设计考虑了用户的安装和维护需求，使得安装过程简便快捷，同时便于后续的维护和检修工作。

三、技术参数

关于ETU45B脱扣器的具体技术参数，如额定电流、分断能力、保护类型等，可能会因产品型号和配置的不同而有所差异。一般来说，该脱扣器适用于西门子框架断路器，如3WL系列等，并可根据用户需求进行定制。

四、应用场景

ETU45B脱扣器广泛应用于各种需要电路保护的场合，如工业生产线、商业建筑、住宅小区等。在这些场合中，

SIEMENS ETU45B is an important part of Siemens frame circuit breakers, mainly used to protect the circuit from overload, short circuit and other faults. The following is a detailed description of the release:

I. Product overview

As a key part of Siemens frame circuit breaker, the ETU45B is used in conjunction with the main body of the circuit breaker to quickly cut off the power when the circuit is abnormal, preventing equipment damage and fire and other safety accidents. The trip device has the characteristics of high precision, high reliability and easy installation and maintenance, and is widely used in industrial, commercial and civil fields.

Second, product characteristics

High-precision protection: The ETU45B release accurately detects the current change in the circuit and immediately cuts off the power once the set value is exceeded, protecting the circuit and equipment from faults such as overload and short circuit.

High reliability: As an internationally renowned electrical brand, Siemens products are designed and manufactured in accordance with strict quality standards to ensure that the release device can still work reliably in harsh environments.

Easy installation and maintenance: The ETU45B release is designed with the user's installation and maintenance needs in mind, making the installation process simple and fast, and facilitating subsequent maintenance and overhaul work.

3. Technical parameters

The specific technical parameters of the ETU45B release, such as rated current, breaking capacity, protection type, etc., may vary depending on the product model and configuration. In general, the release is suitable for Siemens frame circuit breakers, such as the 3WL series, etc., and can be customized according to user needs.

Iv. Application scenarios

ETU45B release device is widely used in various occasions requiring circuit protection, such as industrial production lines, commercial buildings, residential areas, etc. On these occasions,