Safety Interlock Switches MA Series Magnetically Actuated Safety Interlock Switches Large selectionchoose from a large selection of contact configurations housed in plastic to satisfy most application requirements NEMA 6 enclosure enables the MA Series switches to satisfy most application requirements (MA 3, 4, 5 are NEMA 4) Misalignment tolerantthe non-contact actuation of the switches makes them very tolerant to misalignment of up to 10 mm (0.39 in.) Variety of terminationsselect various cable lengths or terminal strip termination for easy installation. Cable connector on selected models. Long lifethe MA Series is designed for a minimum of one million actuations R A Rapid Delivery Product: Select models are available for shipment today or within 3 to 5 days C US Conforms to EN1088, EN292, EN60204-1 UL and C-UL listed Specifications Electrical All Models Unless Indicated Safety Contacts: AC models MA-1 thru 5, 10, 12, 13, 16 1 N/C MA-13, 16, 21 2 N/C G DC models MA-12, 13, 14, 16 1 N/C MA-13, 15, 16, 20, 21 2 N/C Safety Contact Operating Distance: Make 7-12 mm (0.28-0.47in.) Break 12-25 mm (0.47-0.98 in.) Auxiliary Contacts: MA-2, 4, 12, 13, 14, 15, 16, 21 1 N/O MA-3 1 N/C Aux. Contact Operating Distance: MA-2, 4, 16, 21 Make 8-13 mm (0.39-0.51 in.) Break 8-10 mm (0.31-0.39 in.) MA-3 Make 21 mm (0.83 in.) Break 24 mm (0.94 in.) Safety Rated Voltage: AC models: All except MA-10 230 VAC AC models: MA-10 110 VAC DC models 30 VDC Safety Rated Current: AC models: All except MA-3 2 A, fuse externally 1.6 A quick acting AC model: MA-3 3 A, fuse externally 2.5 A quick acting DC models: All except MA-15 1 A, fuse externally 800 mA quick acting DC model: MA-15 0.3 A max., fuse externally 0.2 A quick acting Internal Fuse: AC models 2 A fast acting DC models 1 A fast acting External Fuse (Customer Supplied): AC models 1.6 A fast acting DC models: All except MA-15 0.8 A fast acting 6 Electrical Life: 1 x 10 Safety Aux. MechanicalSpecial Safety Reed Closing Time: 3.0 mS 0.5 mS Drop-Out Time: 2.1 mS 0.3 mS Bounce Time: 0.7 mS 0.7 mS Shock: 10 G 10 G Vibration: 10 G, 50 to 100 Hz Mechanical Mounting: Any position Case & Actuator Material: Molded ABS Wiring Connection: Various lengths or male M12 micro connector Weight: Approx. 384 g (14 oz.) Color: Red 6 Mechanical Life: 10 x 10 Environmental Protection: All models except MA-3, 4, 5 IP67 (NEMA 6) MA-3, 4, 5 IP65 (NEMA 4) Operating Temperature: All models except MA-3, 4, 5 -10 to 55C (14 to 131F) MA-3, 4, 5 -10 to 65C (14 to 149F) Compliance Standards: EN1088, EN292, EN60204-1 Approvals/Listings: CE marked for all applicable directives All models: except MA-3, 4, 5 UL and C-UL MA-3, 4, 5 cCSAus Specifications are subject to change without notice. Note: The safety contacts of the STI switches are described as normally closed (N/C) i.e., with the guard closed, actuator in place, and the machine able to be started. www.sti.com/info G-97MA Series Safety Interlock Switches Basic Body Styles MA-1, MA-2, MA-20 and MA-21 MA-10 and MA-16 MA-12 and MA-13 MA-14 and MA-15 Door Closed, Machine RUN MA-3, MA-4 and MA-5 G 2mm SLIDING DOOR Operation 2mm Door Closed, Machine RUN Operating Principle Mounting Examples Contact Arrangement Door Closed, Machine RUN2mm SLIDING DOOR 2mm Min 50mm 2mmSLIDING DOOR MA-1, 5, 10, 11, 12, 13, 14, 16 Switch Switch 2mm Actuator Actuator Min 50mm Door 1 Door 2 MA-2, 4, 11, 12, 13, 14, 16 Switch Switch Actuator Actuator Min 50mm Door 1 Door 2 Switch Switch Actuator Actuator MA-3, 11, 13, 16, 20 Encapsulated in the MA Series is a unique high-power industrial Door 1 Door 2 reed which is de-rated by a It is advisable, where possible, to non-resetable overload protection mount the switch and actuator on circuit depending on switch type. non-ferrous materials otherwise it On presenting the actuator to the may affect the operating distances. switch, the high intensity magnetic MA-11, 13, 15, 16, 21 field from the actuator causes the contacts to close. On removing the actuator (opening the door), the safety contacts open, isolating the Door Closed, Machine RUN Door Open, Machine STOP, Door Covering Switch machine. Door Closed, Machine RUN Door Open, Machine STOP, Door Covering Switch No access to switch 2mm thus preventing attemptsNo access to switch 2mm SLIDING DOOR thus preventing attempts SLIDING DOOR to defeat the interlock SLIDING DOOR SLIDING DOOR to defeat the interlock Wherever possible the units should be mounted so that no access can be obtained to the switch when Door Closed, Machine RUN Door Open, Machine STOP, Door Covering Switch the guard door is open, thus preventing attempts to defeat the safety system. No access to switch 2mm thus preventing attempts SLIDING DOOR SLIDING DOOR Select models are available for Rapid Delivery. to defeat the interlock Visit this product on www.sti.com for details.. www.sti.com/info G-98