Model ES/TufBox, Cathodic Protection Rectifiers, Air-cooled, by Universal Rectifier

Aluminum, Free-standing Cabinet with ES "Utility" Rectifier
Model ES / TufBox Overview

Model Model ES / TufBox Cathodic Protection Rectifiers combine the superb electrical features of Universal Rectifiers Model ES Utility Rectifiers with a TufBox enclosure for outdoor mounting. The rectifiers are sturdy, secure, and easy to install and service.

Electrical Features
  • Circuit breaker.
  • Ammeter.
  • 3 coarse and 6 fine taps.
  • Silicon rectifying elements.
  • Surge protection.
  • AC and DC lightning protection.
  • AC input terminal block.
  • Assembly only 13" high x 5" wide x 5.5" deep.
  • 120V AC single phase input.
  • Standard models for 6V-5A, 6V-10A, 12V-5A, 12V-10A, 20V-5A, 20V-10A, 30V-5A, 40V-5A.
  • Other models available up to 200 Watt DC output.
Mechanical Features
  • Aluminum construction.
  • Below-grade entry for wiring.
  • Side panels slide up and out.
  • Open Tufbox provides easy access to front and rear of junction box and to below-grade wiring.
  • All test points easy to reach with measuring devices.
  • Using optional extra "side mounting blocks," slotted poles can be attached for mounting markers and other equipment.

Secure & Vandal-Proof

A TufBox enclosure is equipped with a stainless steel key that allows quick and easy access. This patented lock is vandal-proof, protecting your important assets.

ES Utility Line Rectifier Ordering Guide

Configure an 8-position model number like ES-I-V 20-5
Positions from left to right are as follows:

Position #1: Model

ES-I = ES Utility Rectifier

ES-II =ES Utility Rectifier

Position #2: Output Control Type

S = Standard Rectifier (Manual taps)
V = Variac Control
E = Constant Voltage Control (ES-II only)

D = Constant Current Control (ES-II only)
P = Constant Potential Control (ES-II only)
M = Multiple Modes (ES-II only)

Position #3: DC Output Voltage*

List DC Voltage Desired (6V, 12V, 20V, 30V or 40V)

Position #4: DC Current Output*

List DC Current Desired (5A or 10A))

Position #5: Special or Optional Features

H = Hour Meter (ES-II only)

K = Red or Green Status Lights ((ES-II only)

* Combinations are 6V-5A, 6V-10A, 12V-5A, 12V-10A, 20V-5A, 20V-10A, 30V-5A,  40V-5A