PULL CORD SAFETY STOP SWITCH – WITH CABLE BREAK DETECTION (RSB-2)

The Model RSB is a heavy-duty safety control (“stop switch”) that provides a shut off of dangerous equipment in an emergency. A cable pulled by endangered personnel actuates it. The output contacts of the Model RS can control up to two separate circuits, one for machinery shutdown and one for an alarm.The Model RSB has the built-in advantage of cable break detection. Each unit includes (1) RSB-20 Spring Tensioning Kit with Turnbuckle.

Safety minded operators of conveyors, production lines, elevator equipment, assembly lines, material handling systems, cranes, etc. consider it a must for employee protection. Most states have safety statutes that require these switches on conveyors and related equipment. American National Standard Institute recommends their use in ANSI standard No. ASME B20.1-2012-5.11. This ANSI standard will probably soon become part of the William-Steiger Act of 1970- the OSHA act.

TECHNICAL SPECIFICATIONS

•  The housing is cast aluminum, with optional epoxy coatings available.
•  The unit can be actuated via a cable pull from either direction, in other words, the unit is “double-ended”. Pull cable is required on EACH side of RSB unit (+/- 5 feet).
•  The unit is mounted on the conveyor by drilling (3) 13/32” diameter holes.
•  All units have (3) 3/4” NPT conduit openings.
•  The standard units have dry, unpowered SP/DT microswitch(es) rated for 20A @ 120 VAC, 240 VAC, and 480 VAC; 1/2 amp at 125 VDC and 1/4 amp at 250 VDC.
•  Special spring tensioning kits included with each RSB unit provide stability due to temperature fluctuations, and ease of cable adjustment.
•  The general purpose units are rated NEMA type 4/4X weatherproof and corrosion-resistant. Explosion proof units are rated NEMA type 7/9 for dust ignition proof and vapor explosion proof. Specifically, they are listed for Class I, Div. 1, Groups C and D; and Class II, Div. 1, Groups E, F and G. The dual-rated “D” units are rated NEMA type 4X weatherproof and NEMA type 9 dust ignition proof. Specifically, they are listed for Class II, Groups E, F and G.
•  The general purpose controls meet or exceed IP65.
•  UL Listed and CSA Certified.