继电器外壳应清洁无灰尘。
介绍了一种具有热过载报警不脱扣功能的CM 3塑料外壳式断路器，其将热过载继电器的部分功能与MCCB的功能有机地结合在一起。
CM3 molded case circuit breaker (MCCB) with thermal overload alarm but non-release function was introduced. It integrates part function of thermal overload relay and function of MCCB.
MCP应符合NEMA12日（北美应用）或IP - 54的外壳充分继电器的大小，人机界面，PLC机架等所需的洁净室系统的运作。
The MCP shall be a NEMA 12 (for North American applications) or IP-54 enclosure adequately sized for all of the relays, PLC rack, HMI, etc. required for the operation of the clean room system.
将加热器-空调电线束接头和鼓风马达继电器电线束接头推入扣件与它们加热器-空调外壳里的固定孔啮合。
Engage the heater-A/C wire harness connector and blower motor relay wire harness connector push-in retainers with their mounting holes in the heater-A/C housing.
相机室内和室外外壳已得到改善，能经受各种环境条件考验，它们能将警报和继电器直接连线到附近的传感器。
The indoor and outdoor housings have been improved to withstand a variety of environmental conditions, and they feature alarms and relays for direct wiring to nearby sensors.
相机室内和室外外壳已得到改善，能经受各种环境条件考验，它们能将警报和继电器直接连线到附近的传感器。
The indoor and outdoor housings have been improved to withstand a variety of environmental conditions, and they feature alarms and relays for direct wiring to nearby sensors.
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