This is a Bosch 00617228 Microwave Door Interlock Switch. The Bosch 00617228 Microwave Door Interlock Switch prevents the microwave from starting when the door is open. The Bosch OEM Part 00617228 is quality tested and Bosch approved. Part 00617228 may differ in appearance, but is an unused, functional equivalent, and a perfect fit replacement/substitution to prior Bosch Part Number(s): 617228. The Bosch 00617228 is a genuine Original Equipment Manufacturer (Authentic OEM) part from Bosch that fits perfectly with various models from the following Microwave brand(s): Bosch, Thermador. This brand new genuine Bosch part is an authorized OEM part; perfect for repairs and replacements. The microwave shielding and interlock switches must be properly tested following the door interlock switch replacement, a service technician should install this part. It is recommended to either refer to your appliance service manual, contact your appliance manufacturer, or contact a service professional to validate the needed part number for your appliance prior to purchasing. Bosch makes products that are invented for life. With an enduring commitment to quality and design, Bosch products allow you to savor every detail. When looking for a replacement part that can be trusted and is designed for your specific appliance, look no further, rely on Bosch replacement parts.