Installation Tips for Rack Mount Units

Appendix A: Rack Mount Supplement

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

SU042-1 3000 VA, SU42-2 3000 VA, SU041 1400 VA, SU043 1400 VA specifications

The APC SU042-1, SU043, SU041, and SU42-2 are reliable uninterruptible power supply (UPS) systems designed to provide consistent power protection for essential electronic equipment. This range of UPS models is ideal for homes, small offices, and critical servers, ensuring peace of mind through a reliable power backup solution.

The APC SU042-1 is a high-capacity 3000 VA model that combines robust performance with smart technologies. It is equipped with a pure sine wave output, ensuring that sensitive electronics, such as servers and networking equipment, receive clean and stable power. With a compact design, this UPS easily fits into various environments while providing extended runtime options through additional battery packs. The LCD display offers real-time information on battery status, load, and input/output voltage, allowing for quick monitoring and management.

In the mid-range category, the APC SU043 and SU041 models stand out with their 1400 VA capacity. These units are perfect for desktop setups and small servers, offering essential features to protect equipment from power disturbances. Both models feature automatic voltage regulation (AVR), which stabilizes incoming voltage and minimizes the risk of damage from power surges. They also come with multiple output sockets, accommodating a variety of devices while ensuring maximum efficiency.

The SU42-2, another 3000 VA model, provides a higher capacity for businesses looking to safeguard critical infrastructure. Similar to the SU042-1, this unit boasts pure sine wave output and advanced LCD displays for monitoring. Additionally, the SU42-2 features customizable settings that allow users to tailor performance based on specific power needs, such as setting alarms and adjusting sensitivity to voltage fluctuations.

All four models utilize advanced battery management systems to enhance battery life and performance. User-friendly, they come with USB and serial connectivity options, allowing seamless integration with network monitoring software, enabling administrators to manage and monitor power status remotely. In conclusion, the APC SU042-1, SU043, SU041, and SU42-2 UPS models represent a versatile range of solutions designed to protect vital equipment against power disturbances, making them an essential investment for anyone reliant on a steady power supply.

Appendix A: Rack Mount Supplement