DISCONTINUED PRODUCT DUAL INPUT POWER DISTRIBUTION MICRO SMARTSWITCH USER MANUAL 200 VAC to 240 VAC 50/60 Hz 24 Amps
General Description The Liebert Micro SmartSwitch (MSS) is a single Phase Dual Input rack mountable Power Distribution Unit (PDU) with a built in Automatic Transfer Switch. When Input A falls below 168 VAC and Input B is valid, the output is automatically transferred to Input B. The output is transferred back to Input A when Input A is valid and rises above 178 VAC. This high speed transfer rate ensures that the transfer is transparent to the sensitive equipment.
About This Device This guide serves as an outline to assist Qualified personnel with the installation of the Liebert Micro SmartSwitch. The input voltage for this Micro SmartSwitch unit is 200VAC to 240VAC. This Micro SmartSwitch includes the following features: • Mounts in 1U of rack space • Provides 12 receptacles on 4 circuit breakers • Protects against electrical line surges and spikes This Micro SmartSwitch is UL and c-UL listed as Information Technology Equipment.
IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS. This manual contains important instructions that should be closely followed during installation and maintenance of this product. This product is designed for Commercial/Industrial use only. It is not intended for use with life support and other U. S. FDA designated “critical” devices. Maximum load must not exceed that shown on the rating label. See Limited Warranty.
Installation Place rear rail [R] over the studs in the front rail [F]. Tighten nuts finger tight. The mounting tab [T] will be facing out, so the holes align with the rack sides. Adjust length of rail assembly to fit inside rack. Tighten either the wing nuts or hex nuts. Insert cage nut (one on each side) in rack. Set hooks at rear of rail over holes in rack. Use screw [2] (one on each side) to attach rails to rear of rack through cage nut. Use screw [2] (two on each side) to attach rails to front of rack.
Ground Bonding Screw A ground bonding screw is provided on the rear of the unit. This feature is provided as an attachment point for conductors the rack may contain for the purpose of functional grounding or bonding of ungrounded metal parts. Ground cables are not included. Note: The Ground Bonding wire must be a minimum of 10 AWG to maintain proper grounding. Connecting Devices Make sure that the devices connected do not exceed the unit capabilities.
About the Circuit Breakers Input power can be verified by the illumination of the two LEDs on the front of the unit, marked ~A and ~B. Output power can be verified by the illumination of the circuit breaker, when in the On position If connected device is not powered, verify the respective circuit breaker is On and illuminated. If power is still not restored, see “Contacts” section later in this document.
Configurations The Micro SmartSwitch can be configured to fit several power distribution requirements. Configuration 1 This application shows use of the Micro SmartSwitch in conjunction with singleline cord devices . Note: Each segment can accommodate a maximum current draw of 10A, so the individual load connected to it must not exceed 10A or the circuit breaker will trip.
Configuration 3 This configuration shows the use of a Micro SmartSwitch with 2-line cord devices. In this configuration, a server is connected to each of the four segments of the Micro SmartSwitch. Note: Each segment can L6-30P Load accommodate a maximum current draw of 10A, so the individ1 ~A P Load ual load connected to it must not Dual Input D 2 3 exceed 10A or the circuit Load ~B U 4 breaker will trip.
Liebert Micro SmartSwitch Specifications Liebert Model Name Micro SmartSwitch Part Number MSS30A-240 Unit Dimensions (H x W x D) in 1.72 x 17.00 x 15.25 in (mm) (43.7mm x 432mm x 387mm) Unit Weight: lbs.(kg) 20.0 lbs.(9.7kg) Shipping Weight: lbs.(kg) 32.0 lbs.(14.
DISCONTINUED PRODUCT
DUAL INPUT POWER DISTRIBUTION Micro Smart Switch USER MANUAL The Company Behind the Products Technical Support With over a million installations around the globe, Liebert is the world leader in computer protection systems. Since its founding in 1965, Liebert has developed a complete range of support and protection systems for sensitive electronics: United States 1050 Dearborn Drive P.O.
