Dell 4200W: Hardwiring the UPS Input Figure 6. Circuit Breaker Diagram

Hardwiring the UPS Input Figure 6. Circuit Breaker Diagram: Dell 4200W

Hardwiring the UPS Input

WARNING: Only qualified service personnel (such as a licensed electrician) shall perform the electrical

installation. Risk of electrical shock.

The Dell Online Rack hardwired models require a dedicated branch circuit that meets the following

requirements:

S 250V/30A, 2-pole circuit breaker (25A for 3750W/230V UPS models) to provide short circuit and

overcurrent protection

S The protection device requires a two-pole disconnection device between the UPS output and the

load (see Figure 6)

S The breaker must be wall-mounted and be readily accessible to the operator

S For Europe, the breaker must meet the IEC/EN 60934 standard and have a contact air gap of at

least 3 mm

S 200–240 Vac

S Single-phase (4200W/208V model is split-phase)

S 50/60 Hz

S Flexible metal conduit (recommended for ease of service and maintenance)

Wall

2-pole

Breaker

Line

AC Mains

UPS

Neutral

Figure 6. Circuit Breaker Diagram

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Installation and Startup