Panasonic's SFY relay series features a force-guided contact structure that complies with EN 50205, Type A. This structure enables detection of contact welding and construction of a safety circuit. They have a small size and low profile - 4 pole: (L x W x H) 31.0 x 28.6 x 14.5 mm, 6 pole: (L x W x H) 39.0 x 28.6 x 14.5 mm, and offer different contact arrangements including: 4 pole: 2 Form A 2 Form B, 3 Form A 1 Form B; and 6 pole: 4 Form A 2 Form B, 5 Form A 1 Form B.