MRB24B-A NKK Switches

Series MRB Miniature PCB Process Sealed Rotaries General Specifications Electrical Capacity (Resistive Load) Logic Level: 0.4VA maximum 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A 20mV ~ 28V) Note: See Supplement Index to find explanation of operating range. Other Ratings Contact Resistance: 80 milliohms maximum Insulation Resistance: 100 megohms minimum 500V DC Dielectric Strength: 500V AC minimum for 1 minute minimum Mechanical Life: 30,000 operations minimum Electrical Life: 10,000 operations minimum Operating Torque: 0.04Nm average Contact Timing: Nonshorting (break-before-make) Indexing: 45 for On-On-On & 90 for On-None-On Materials & Finishes Shaft: Brass with nickel plating Bushing: Zinc alloy with nickel plating Frame/Bracket: Steel with tin plating Movable Contacts: Beryllium copper spring with gold plating G Stationary Contacts: Copper with gold plating Terminals: Brass with tin plating Base: Polyamide Environmental Data Operating Temperature Range: 10C through +70C (+14F through +158F) Humidity: 90 ~ 95% humidity for 96 hours 40C (104F) Vibration: 10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range & returning in 1 minute 3 right angled directions for 2 hours 2 Shock: 50G (490m/s ) acceleration (tested in 3 right angled directions, with 5 shocks in each direction) Sealing: Use of optional o-ring AT535 with MRB meets IP67 of IEC60529 specifications Installation Mounting Torque: .686Nm (6.08 lb in) Cap Installation Force: 19.6 ~ 29.4N (4.41 ~ 6.61 lbf) PCB Processing Soldering: Wave Soldering Recommended: See Profile B in Supplement section Manual Soldering: See Profile B in Supplement section Cleaning: Automated cleaning. See Cleaning specifications in Supplement section. Standards & Certifications The MRB Series rotaries have not been tested for UL recognition or CSA certification. These switches are designed for use in a low-voltage, low-current, logic-level circuit. When used as intended in a logic-level circuit, the results do not produce hazardous energy. G28 www.nkkswitches.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesMiniature PCB Process Sealed Rotaries Series MRB Distinctive Characteristics Double flatted bushing prevents rotation in panel and increases stability. Totally sealed construction, achieved with combination of an interior o-ring, a seal between the frame and base, plus insert molded terminals, prevents contact contamination and allows automated soldering and cleaning. Positive detent mechanism for distinct feel and audible feedback. Break-before-make contact timing with sliding contact mechanism. Metal bushing and frame/bracket provide G durability. Panel seal, achieved with use of optional exterior o-ring, conforms to IP67 of IEC60529 Standards. High contact reliability achieved by the self-cleaning contact mechanism100 x .100 (2.54mm x 2.54mm) terminal spacing conforms to standard PC board grid spacing for straight and right angle mounting. Actual Size Insert molded terminals lock out flux and other contaminants. www.nkkswitches.com G29 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles