HPS, FG1, Finger Guard Kit, Non-Fusible, Series: Imperator®, 1.4 in H x 2.25 in W x 1.95 in D Size, For Use With: AJ, AR, MQMJ, MEMX, QR, SP, PG, PP 50 VA Encapsulated and Commercial Potted Industrial Control Transformer, Plastic, Clear,