APC SU041 1400 VA, SU043 1400 VA user manual Installation Tips for Rack Mount Units, Rail Hardware

Appendix A: Rack Mount Supplement

Installation Tips for Rack Mount Units

Please observe the following items when installing the Rack Mount Redundant Switch:

∙The Redundant switch is furnished with brackets for mounting in standard 19” (46.5 cm) rack mount brackets.

∙Select a rack location with adequate air flow that is free from excessive dust. Do not operate the Redundant Switch where temperature or humidity are outside the limits listed under Specifications.

Rail Hardware

There are different types of racks:

∙Equipment Rack - usually an open rack with threaded mounting holes or no threaded holes.

∙APC Netshelter , IBM, Vero, others - enclosed rack with square holes

∙Dell, Compaq, Rittal - enclosed rack with square holes

∙HP Rack - enclosed rack with round holes

These racks differ in the methods required for mounting equipment. They may have threaded holes (hardware not included), round holes (require clip nut, shown below), or square holes (require cage nut, shown below).

∙Telecomm Rack - open rack with two poles / four poles and threaded round holes (hardware not supplied by APC).

Included with the Redundant Switch are two kinds of nuts and screws for mounting your product:

∙	Clip nut 10-32 internal thread - best used with round holes - APC part number 810-2004
∙	Cage nut - 10-32 internal thread - best used with square holes - APC part number 810-2008

∙Screw 10-32 Phillips Head Ornamental Screw - used with above clip nut and cage nut - APC part number 810-0002

Note:

Racks with threaded round holes do not require nuts. APC does not provide hardware for threaded racks. See your rack

supplier for this hardware or specifications for this hardware.

Check the type of rack you have against the hardware required for mounting in the table below.

Rack Type	Hole Type	Hardware Required	Hardware Included
Equipment Rack	Threaded, or No	See rack specifications if	N/A if threaded. If not
	Threads	threaded. If not threaded use APC	threaded use APC
		hardware	hardware.
Netshelter/Compaq/IBM/Dell	Square	Cage nut, 10-32 screws	810-2008, 810-0002
HP	Round	Clip nut, 10-32 screws	810-2004, 810-0002
Telecomm	Threaded	See rack specifications	N/A

11 990-0253A, Revision 2 6/99