SW688P - 2 x SW68P for Motor Reversing - IP66 (Part of the SW60 Series) The SW688P is a miniature series single pole, free standing, compact contactor which is sealed to IP66. The SW688P has been designed for Motor Reversing applications with direct current loads, particularly motors as used on small traction motors, hydraulic power packs and small electric winch motors. Developed for both interrupted and uninterrupted loads, the SW688P is suitable for switching Resistive, Capacitive and Inductive loads. Application Thermal Current Rating (Ith) Intermittent Current Rating: 30% Duty Interrupted current - opening and closing on load with frequent switching (results in increased contact resistance). Uninterrupted current - no or infrequent load switching requirements (maintains a lower contact resistance). The SW688P features paired double pole double breaking main contacts with silver alloy tips, which are weld resistant, hard wearing and have excellent conductivity. The SW688P incorporates an enclosed top cover and offers environmental protection to IP66. The SW688P has M6 stud main terminals and 6.3mm spade coil connections. Mounted using supplied brackets, or as separate items. Mounting can be on the side or base of the contactor. Rated Fault Current Breaking Capacity (Icn) 5ms Time Constant: (in accordance with UL583*) SW688P Rated Fault Current Breaking Capacity (Icn) Resistive Load: (in accordance with UL508*) SW688P Maximum Recommended Contact Voltages (Ue): SW688P Typical Voltage Drop per pole across New Contacts at 100A Mechanical M.T.B.F Coil Voltage Available (Us) (Rectifier board required for A.C.) Coil Power Dissipation: Highly Intermittent Rated Types Intermittently Rated types Prolonged Rated Types Continuously Rated Types Maximum Pull-In Voltage (Coil at 20˚ C) Guideline: Highly Intermittent Rated types (Max 25% Duty Cycle) Intermittently Rated types (Max 70% Duty Cycle) Prolonged Operation (Max 90% Duty Cycle) Continuously Rated Types (100% Duty Cycle) Drop-Out Voltage Range Typical Pull-In Time (N/O contacts to close) Magnetic Latching† (Not fail safe) Note: Where applicable values shown are at 20˚C * Please check our web site for product UL status Contact Performance Key: Interrupted and Uninterrupted Current The SW688 has fast drop out times and relatively slow pull-in times. Motor direction changes can be undertaken without risk of all contacts being closed at the same time. Note, some coil suppression such as diodes substantially increase drop out times and care must be taken to ensure suitable suppression is used (e.g. diode and resistor in series). Performance data provided should be used as a guide only. Some de-rating or variation from figures may be necessary according to application. Thermal current ratings stated are dependant upon the size of conductor being used For further technical advice email: [email protected] Albright reserve the right to change data without prior notice Connection Diagram Current (Amperes) EE Type (Steel Shroud) Closed Contact Housing Rated suitable for Application = Interrupted Mounting Brackets (See Stud Contactor Range Catalogue) Advised Connection Sizes for Maximum Continuous Current Copper busbar Magnetic Blowouts - High Powered† Guideline Contactor Weight: Magnetic Blowouts† Figures are for guideline purposes only Operating Ambient Temperature Typical Contact Bounce Period Auxiliary Contacts With Diode Suppression Time (Seconds) Without Suppression With Diode and Resistor (Subject to resistance value) Typical Drop-Out Time (N/O Contacts to Open) §: Contacts Large Tips Textured Tips Silver Plating AC Rectifier Board (Fitted) Coil Suppression† Flying Leads Manual Override Operation Vacuum Impregnation Key: Optional † Connections become polarity sensitive Albright International Ltd, Evingar Trading Estate, Ardglen Road, Whitchurch, Hampshire, RG28 +44 UK Albright International, 125 Red Lion Road, Surbiton, Surrey KT6 7QS, England,Tel: +44 (0) 20 8390 5357, Fax:7BB,(0) 20 8390 1927 Tel: [email protected] or [email protected] Web 890030, Fax: +44 (0)1256 890043 E-mail: +44 (0)1256 893060, Fax: +44 (0)1256 893562, Dedicated Sales Tel: +44 (0)1256 Site: www.albrightinternational.com E-mail: [email protected] or [email protected] Web Site: www.albrightinternational.com Copyright © 2010 Albright International Ltd Copyright © 2013 Albright International LTD