What is the difference between a delay on break relay and a delay on make relay? A delay on break can be used to protect a compressor in the case of power interruption. A delay on make can prevent short cycling of compressor. Packard gives you the knowledge you need for success on the job. For more information on Packard Academy training for technicians, please visit our website at www.packardonline.com. Packard supplies to Wholesalers only.