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Hinge Selection Guide for Enclosures

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Design considerations. Use the following characteristics, definitions, and descriptions to help you understand and evaluate your options outlined by the hinge selection chart inside this document. Angle of Opening: At what predetermined angle(s) might the hinge position the open door? Or is the angle of positioning user controlled, as with a friction hinge? What is the total range of motion or maximum angle to which the hinge will open? Concealed: Does the hinge or mounting hardware need to be concealed? This can be accomplished with internally mounted hinges, or by using a welded, thread-stud, or tapped-hole installation style. Such a decision is usually driven by industrial design/appearance concerns or vandal resistance requirements. Corrosion Resistance (Salt Spray Test): What level of corrosion protection is required of the access hardware? This is usually expressed in terms of hours of salt-spray exposure per ASTM B-117. In some cases, users will simply mandate the use of 300 Series stainless steel. Door Removal: Does the hinge need to separate into two pieces in order to allow the door to be removed from the frame for installation access or aisle clearance? Does it simply lift off, or is there a catch/release feature? Embedded: Designed to be shrouded within the enclosure housing. Embedded hinges provide added functions like position control. Environmental Sealing: This reflects the level of sealing suitable for enclosures to prevent entrance of dust, water and other contaminants into the enclosure. Most styles of hinges can achieve environmental sealing if properly gasketed. (e.g., NEMA 4, IP-66) External: Mounts on the outside surface of the enclosure. Provides easy installation and maximizes interior enclosure space. Hinge Material: The material used in the construction of the hinge (e.g., steel, stainless steel, zinc alloy, etc.) can affect maximum working load, corrosion resistance, and finish options. Installation: How the hinge will be attached to the door and frame— welded, or with threaded bolt, through bolt, rivet, or screw mounting hardware? Defines the mechanical means used to attach the hinge to the door/frame. Door Thickness: The thickness of the door in which the hinge will be installed, expressed in millimeters. Position Control: What type of feature will be used to control the position of the hinge and door — detents, constant torque, adjustable torque, self-closing, dampened action, etc. Seismic: Is seismic (earthquake) testing required? Does your enclosure need to be seismic rated? Seismic testing is conducted on the whole enclo sure system, not just the hardware. Southco hinges suggested for seismic-rated enclosure use should be evaluated in the specific enclosure design. Size of Hinge: Use the following scale as a guide for matching hinge size to enclosure size. Small = ≤ 40 mm 2 Medium = 40 mm 2 to 80 mm 2 Large = ≥ 80 mm 2 Vandal Resistance: The level of resistance to access by unauthorized persons, usually expressed in time, with a specified set of tools. Southco has developed the following rating system: VR 0 = Provides no resistance to forced entry VR 1 = Limited resistance to forced entry by available tools (withstands 2-minute vandal test with pocket knife and screwdriver) VR 2 = Provides resistance to deliberate forced entry with common tools (withstands 5-minute vandal test with hammer, screwdriver and pliers) VR 3 = Prevents access with heavy duty tool set (withstands 5-minute vandal test with large hammer, chisel and pry bar) VR 4 = Prevents access with heavy duty tool set (withstands 5-minute vandal test up to and including 10 V cordless drill or saw) Southco makes it possible. Need other related engineered access hardware solutions? Modified or custom solutions? North American Customer and Technical Support-Center Tel: (1) 610 459 4000 European Customer and Technical Support Center Tel: (44) 0 1905 346722 Asian Customer and Technical Support Center Tel: (852) 3127 1503 ©Southco NA EnGH 509 Open a world of possibilities n n

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