My D has been the recipient of a lot of electrical repairs in the past couple of days. Went out driving this morning and decided to stop and have a look around the relay compartment. The lambda relay was noticeably hot, hot to the touch not enough to burn my finger but hot nonetheless. Is this normal function?

(Some background: replaced the alternator last week because the PO installed the last one incorrectly and caused the positive terminal to break. Replaced all of the changeover relays with DMCH's kit. Running a new lamp delay module. The car didn't seem to like the new RPM relay so still using the old one. Also want to give a shout out to DMCMW for their sterling advice which saved me a considerable amount of money