OPEN FRAME SERIES Open Frame Instrument Switches C ole's quality Open Frame Instrument Rotary Switch provides low contact resistance (.005W), very high contact reliability, smooth action with positive positioning, precision design, and trouble free construction of glass epoxy insulators and silver conductors. Rated for 100,000 cycles minimum, the contact mechanism is a bifurcated brush, promising 100% redundancy and avoidance of contact failure. In addition, it has been designed and manufactured to meet or exceed all applicable requirements of MIL-S-3786, MIL-T-945, QQ-P416, MIL-S-13282, MIL-STD-202, MIL-A-8625, and MIL-STD-167. All Open Frame Series switches are available pre-wired to terminal boards or connectors. Cole's Open Frame switches are ideal for high voltage, high current, and low resistance applications. ISO9001 CERTIFIED OPEN FRAME SERIES Open Frame Series/Page 2 Open Frame Instrument Switches Very Low Electrical Resistance, Very Stable Electrical Contacts, 64 Positions Max Open Frame 2.75 inch. square deck (See Page 3) Open Frame 2.25 inch. square deck (See Page 4) NOTES: Open Frame - .250 Shaft Dia., 2.25 inch. square deck, (See Page 4). Open Frame - .250 Shaft Dia., 2.75 inch. square deck, (See Page 3). 2650 South Croddy Way PHONE 714.556.3100 P.O. Box 25063 Santa Ana, California 92799-5063 USA SALES FAX 714.241.9061 www.cole-switches.com ISO9001 CERTIFIED OPEN FRAME SERIES Open Frame Series/Page 3 Open Frame Instrument Switches Very Low Electrical Resistance, Very Stable Electrical Contacts, 64 Positions Max Features * Solid Silver and Silver Plated Conductors. * Very Low Resistance (.005W). * High Current Capacity. * User Adjustable Stop. * Pre-Wired Option for Ease of Installation. * Glass Epoxy as Strong Stable Insulator. * Bifurcated Brush Contacts for high reliability. * 13+ Decks as Special Order. * Up to 12 Decks as Standard. * 8 Poles Maximum Available. * 64 Positions Maximum Available. Front View Side View Rear View Contact Silver Detail 2650 South Croddy Way PHONE 714.556.3100 P.O. Box 25063 Santa Ana, California 92799-5063 USA SALES FAX 714.241.9061 www.cole-switches.com ISO9001 CERTIFIED OPEN FRAME SERIES Open Frame Series/Page 4 Open Frame Instrument Switches Front View Rear View Side View Terminal Board Side View Mounting Plate with Terminal Board - Front View ORDERING INFORMATION Sample Code Switch shown in the sample code is a 2-1/4 Square, 2 Poles per Deck, Shorting, 11-1/4 Detent, 31 positions per Pole, 3 Decks, Adjustable Stop, Terminals to Rear. OPTIONS The following options can be added to the standard switch. When ordering, simply add the letters after the basic part number. A = Adjustable stops. D = Screwdriver slot. F = Fixed stop between the first and last position on a fullturn switch. G = RFI-EMI shielding. L = Low Level. P = Panel and shaft seals. S = Shorting (Available in all Configurations). Y = Optional .432 Non-Turn Washer. Screw Terminals Available (Contact Factory for Special Part Number). 2650 South Croddy Way PHONE 714.556.3100 P.O. Box 25063 Santa Ana, California 92799-5063 USA SALES FAX 714.241.9061 www.cole-switches.com ISO9001 CERTIFIED OPEN FRAME SERIES Open Frame Series/Page 5 Open Frame Instrument Switches INSTRUMENT SERIES SWITCH SELECTION GUIDE - Positions Available for Maximum Rotation NOTES: Series Size: 14=1-1/2" Square. 22=2-1/4" Square. 16=1-3/4" Square. 26=2-3/4" Square. * Position listed are maximum available, full rotation, within configuration parameters. * Non-Shorting contacts will be furnished unless otherwise specified. NS=Non-Shorting. S=Shorting. * Refer to series configuration specifications for complete details and proper identification. * Larger deck sizes, detent spacing variation available for special applications. 2650 South Croddy Way PHONE 714.556.3100 P.O. Box 25063 Santa Ana, California 92799-5063 USA SALES FAX 714.241.9061 www.cole-switches.com ISO9001 CERTIFIED OPEN FRAME SERIES Open Frame Series/Page 6 Open Frame Instrument Switches SIMULTANEOUS PARALLELING SWITCH SIMULTANEOUS PARALLELING *Where it is required to have no open circulating between positions, including the independent contact when the switch is rotated, use these SHORTING Basic I.D. numbers. FUNCTION: The typical schematic left, is 24 positions, 15 degrees, 23 of the positions are shorted together by 23 finger brushes connected in common to one collector ring. The 24th position is contacted by an entirely separate finger brush which is connected to a separate collector ring. As the switch is rotated, the separate brush makes contact with each switch position while simultaneously all other positions are shorted together. No second one pole deck is required to perform this function, thus overall length is reduced and wiring time costs are reduced. ONE PIECE FINGER BRUSHES: No mechanically or solder joined sections in the solid, stressfree one piece finger brush assembly. Solid fine silver finger brush contacts, stator contacts and collector rings. BINARY CODING OR POSITION SELECTION: Paralleling decks singly or in tandem are used for binary coding or position selection allowing minimum amount of interconnecting circuit and remote control. APPLICATION EXAMPLES: 1) Low voltage signal testing. 2) Multiple circuit cable testing, both continuity and voltage breakdown. 3) Current testing circuits to ground or common. 4) Solid state testing where it is desirable to connect all circuits to eliminate transients causing erroneous test data. 5) One or more paralleling decks can be included in a standard multi-deck switch to meet all types of requirements. 2650 South Croddy Way PHONE 714.556.3100 P.O. Box 25063 Santa Ana, California 92799-5063 USA SALES FAX 714.241.9061 www.cole-switches.com ISO9001 CERTIFIED OPEN FRAME SERIES Open Frame Series/Page 7 Open Frame Instrument Switches PROGRESSIVELY PARALLELING (SHORTING) SWITCH PROGRESSIVELY PARALLELING MAXIMUM ROTATION: 180 Degrees. FUNCTION: The one piece finger brush assembly progressively connects (or shorts) together the switch positions sequentially as the switch is rotated. ONE PIECE FINGER BRUSHES: No mechanically or solder joined section in the solid, stressfree one piece finger brush assembly. Solid fine silver finger brush contacts, stator contacts and collector rings. APPLICATION EXAMPLES: This type of switch is utilized for paralleling capacitors in capacitance decade units, for varying capacity values in multiple fixed frequency generators, receivers, transmitters, etc. It is used in many resistance bridge, strain gage and transducer applications, syncro systems, remote controlling, and computer systems. One or more progressively paralleling decks can be included in a standard multi-deck switch to meet all types of requirements, providing it does not rotate over 180 degrees. NOTES Current Rating: 1 1/2 amp with standard finger brush. Resistance: 0.005 ohms. 2650 South Croddy Way PHONE 714.556.3100 P.O. Box 25063 Santa Ana, California 92799-5063 USA SALES FAX 714.241.9061 www.cole-switches.com ISO9001 CERTIFIED OPEN FRAME SERIES Open Frame Series/Page 8 Open Frame Instrument Switches Open Frame Technical Data Specification Military Specifications Continuous (Non-Switching) Current Carrying Capacity Switching Current Capacity at 28 VDC resistive Switching Current Capacity at 115 VAC resistive Switching Current Capacity at 28 VDC inductive (2.8 H.) Switching Current Capacity at 28 VDC Lamp Load Low Level max. capacity Unit Dielectric Strength, min. Contact resistance, max. (initial) Contact resistance, max. (after life) Insulation resistance, min. (initial) Insulation resistance, min. (after life) Switching Life, min Mechanical Life, min Rotational Torque, min. Rotational Torque, max. VRMS Value MIL-S-3786 Amps Note: 15 at 28 VDC, with max. contact temperature rise of 20uC Amps 5 Amps 5 Amps 3 Amps 3 mA at Atmospheric pressure with 85uC and at reduced Barometric pressure with 25uC 10 at 30 millivolts DC max. 1,500 milliohms (m) 0.5 milliohms (m) 20 megaohms (M) 100,000 at 100 VAC megaohms (M) 50,000 at 100 VAC 25,000 at rated loads, sea-level, 25uC, 68% relative humidity 100,000 24 80 cycles cycles inch pounds inch pounds Stop Strength, max. inch pounds 50 Mounting Ferrule Strength Withstanding Shaft Push Force Weight inch pounds N/A pounds 200 Altitude Temperature, min. 140 2 inch. Square Glass EpoxyMil P 18177 Pure, Solid Gold plate is an option Silver feet 80,000 Typical pressure at 80,000 feet: 0.4 psi degrees Celsius -55 Temperature, max. degrees Celsius Molded Parts Contact Surfaces grams 125 Impact Shock, Medium Impact Shock, High Moisture Resistant Salt Spray Resistant Per MIL-S-3786, MIL-STD-202, Method 204, test condition "B", vibration grade 3 Meets MIL-STD 202; Method 213 Meets at 100g, MIL-STD 202, Method 207 No No Explosion Proof Immersion EMI/RFI Capacitance, min picofarad (pF) No No Meets MIL-S-3786, 2 ohms Shaft to ground max. 2-1/2 measured between contacts and between ring and contacts Capacitance, max picofarad (pF) 4 measured between contacts and between ring and contacts Vibration Tested Meets 2650 South Croddy Way PHONE 714.556.3100 P.O. Box 25063 Santa Ana, California 92799-5063 USA SALES FAX 714.241.9061 www.cole-switches.com ISO9001 CERTIFIED