SW68 Double Pole Single Throw Normally Open (Part of the SW60 Series) The SW68 is a miniature series double pole contactor, free standing and compact it is designed to fill the gap between 30 ampere relays and 100 ampere contactors. Devised for both interrupted and uninterrupted loads, the SW68 is suitable for switching Resistive, Capacitive and Inductive loads. Typical applications include switching small traction motors, hydraulic power packs and small electric winch motors. • 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). Thermal Current Rating (Ith) Intermittent Current Rating: 30% Duty The SW68 features double pole double breaking main contacts with silver alloy tips, which are weld resistant, hard wearing and have excellent conductivity. The SW68 has M6 stud main terminals and 6.3mm spade coil connections. It can be mounted via M4 tapped holes or mounting brackets – either supplied fitted, 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*) SW68 Rated Fault Current Breaking Capacity (Icn) Resistive Load: (in accordance with UL508*) SW68 Maximum Recommended Contact Voltages (Ue): SW68 Typical Voltage Drop per pole across New Contacts at 80A Mechanical M.T.B.F Coil Voltage Available (Us) 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: 60% Us 60% Us 60% Us 66% Us Typical Drop-Out Time (N/O Contacts to Open): 6ms 35ms Guideline Contactor Weight: SW68 Advised Connection Sizes for Maximum Continuous Current Copper busbar Cable 52mm2 [0.081inch2] Rated suitable for Application Current (Amperes) Contact Performance Key: Interrupted and Uninterrupted Current Connection Diagram Operating Ambient Temperature Closed Contact Housing Typical Contact Bounce Period Magnetic Latching† (Not fail safe) Mounting Brackets (see PC60, MB60 & SW60 Catalogue) With Diode and Resistor (Subject to resistance value) Magnetic Blowouts - High Powered† Armature Cap With Diode Suppression Magnetic Blowouts† Without Suppression Figures are for guideline purposes only Typical Pull-In Time Auxiliary Contacts Time (Seconds) Drop-Out Voltage Range Continuously Rated Types (100% Duty Cycle) Prolonged Operation (Max 90% Duty Cycle) Intermittently Rated types (Max 70% Duty Cycle) Highly Intermittent Rated types (Max 25% Duty Cycle) Environmentally Protected IP66 (see SW68P Catalogue sheet) EE Type (Steel Shroud) Contacts Large Tips Textured Tips Silver Plating AC Rectifier Board (Fitted) Coil Suppression† Note: Where applicable values shown are at 20˚C Flying Leads * Please check our web site for product UL status Manual Override Operation Vacuum Impregnation 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 Key: Optional ○ Standard ● Not Available X † 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 © 2012 Albright International LTD