Heads for ZB4-BK illuminated rotary knobsColoured heads for making illuminated rotary knobs. Assembly on bodies with integrated LEDs, ZB4-BW Series. ### 认可UL, CSA, IEC, CE, JIS, NEMA### Schneider Electric ZB4-B 和 XB4-B Harmony® 22mm 系列 模块化系列 22 mm 按钮和导向照明设备，带铬制圈。 按钮头自动保持在切口内的位置中。 自锁、抗振和三点固定。 提供预标记图例牌和空白标记牌。 使用标签软件自定义的图例，参见库存号 503-5023。 快速连接。 利用简单的夹紧安装，最多可以安装九个电气块。 独特的一体式 LED 专利技术，提供 100,000 个小时的抗振和抗电磁干扰运行。 工作温度范围 -25 至 +70°C。 所有按钮头都需要 22.3 mm 至 22.5 mm 直径的面板开口。
The modular Harmony XB4 range of 22 mm metal control and signaling units combines simplicity of installation, flexibility, and robustness to meet the majority of industrial applications.
**Features:**
* Conformity with IEC, UL, CSA, CCC EAC, and JIS standards, as well as CE marking and marine approvalsUp to IP66, 67, 69, 69K, and type 4X protection ratingsOperating temperature from -40°C –to 70°CShock protection level up to IK06High vibration resistance with shake-proof terminal screwsLarge set of accessories to customize your panelsVarious types of connection are available: screw clamp, connector, Faston connector, spring terminal, or printed circuit boardA wide choice of contact blocks for general purpose or specific applications low current, standard, or high power switching
**Benefits**
* High performance even in the most demanding environments
* Flexibility and adaptability through modular design
* Simplicity and speed of installation
* Wide offer providing a solution for all of your applications
* Attractive design, reinforced with the flush mounting kit