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Temperature Control Panels
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Temperature Control Panels

Product Overview

Chromalox Contactor Control Panels integrate temperature controllers, over-temperature controllers, customer inputs, and contactor power control into a complete package. This cost effective design is excellent for more static application such as tank heating.

4214 & 4224 Mini SCR Control Panels

The Chromalox 4214 and 4224 SCR Control Panels combine full-featured 1/16 DIN, digital- indicating temperature and overtemperature controllers completely assembled, pre-tested and pre-wired in a NEMA 4/12 enclosure. Installation is easy, requiring only power supply, load and sensor wiring.  Drawings for record and installation/operation manuals are also supplied.

  • Model 4214 - One SCR, Single Phase Loads
  • Model 4224 - Two SCRs, Three Phase Loads
  • Digital Indicating Temperature and Overtemperature Controls
  • Compact, Space Efficient NEMA 4/12 Enclosure
  • 40 Amp Shutdown Contactor
  • LED Indication of Power On, Heater On, and Overtemperature Alarm
  • 208-575Vac, Three Phase or 120 Vac Single Phase
  • Universal Sensor Input Types
  • Main Disconnect Switch Option 

Features

  • Fused Control Power Transformer 
  • LED Indication of Power On, Heater On, and Overtemperature Alarm 
  • 40 Amp Shutdown Contactor 
  • Universal Sensor Input 
  • Options: - Main Disconnect - Ground Fault Monitor - Enclosure Heater 

Ordering Information
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4168 & 4268 Mini SCR Power Control Cable

The 4168/4268 Mini-SCR Power Control Panels are a convenient, economical solution designed to control most process heating applications that require precise temperature control, maximum operating efficiency and proven reliability.

  • NEMA 4/12 Steel Enclosure for Indoor/Outdoor Environments
  • Shutdown Contactor
  • Single or Three Phase 30 and 65 Rating Amp for Resistive Loads
  • 120/240/480 Vac Fused Control Power Transformer
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Options
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  • Ground Fault Monitor
  • Enclosure Heater
  • Disconnect Switch
  • Process Controllers
  • Hi-Limit Controllers

Ordering Information
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4530 Series SCR Temperature/Power Control Panels

​The 4530 SCR Panel Series is an economical, convenient solution to mid-range SCR power control requirements, and eliminates the need to select, collect and assemble separate components.  The pre-configured panels are ready to install, requiring only power supply, load and sensor wiring.  Compact packaging makes them easy to mount, even in limited spaces. The control signal may be a customer supplied 4-20 mA signal or manually operated with remote or door mounted potentiometer, or a Chromalox model 2104 digital indicating temperature controller. An optional digital indicating or non-indicating overtemperature controller can be provided.

  • 40 to 90 Amps
  • Voltage FieldSelectable
  • Three Phase, Two Leg
  • Zero Crossover Fired
  • NEMA 12*, 4 and 7 Enclosures
  • Cost Effective SCR Power Control
  • Pre-Wired, Ready to Installa

Features

  • Enclosure
    • NEMA 12 General Purpose, fan cooled and louvered 
    • NEMA 4 Weatherproof
    • NEMA 7 Explosion-proof for Class I, Groups C&D
  • Control Signal Input Device
  • Zero-Crossover Fired SCR Power Controllers
  • Manual Disconnect Switch
  • I 2 T Fusing for SCR Protection
  • Overtemperature Shutdown Contactor
  • Power "ON" Pilot Light
  • Multi-Tap Control Power Transformer
  • Optional Overtemperature Controller with Reset
  • Drawings for Record
  • Installation and Operation Manual
  • Terminals Provided for remote shutdown

Ordering Information
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4230 Series SCR Control Panels

​The 4230 Series of SCR Power Control Panels offers convenient, economical control of resistive loads and capabilities beyond the smaller, more compact 4530 series.  An additional 46 Standard Options increase the application flexibility of the 4230 Series. These pre-engineered, pre-wired panels require only sensor, load and power supply connections - and totally eliminate the need to design your panel, specify and purchase separate components, and assemble them into a functioning power control system.

SCR power control efficiently and accurately proportions power to the resistive heating load.  Unlike traditional contactor control, SCR's deliver:

  • Reduced Power Cost
  • Extended Heater Life
  • Less Maintenance
  • Improved Process Products
  • Stable Process Temperature

4232/4233 Features

  • SCR-Zero Crossover Control
  • 100 to 1200 Amps
  • Louvered, Fan Cooled Enclosures
  • Main Disconnect Switch with Shunt Trip
  • 208-575 Volt
  • Control Power Transformer
  • 4232 NEMA 1
    • 2 Leg, 3 Phase
    • MaxPac II DOT Fired SCR
    • Shorted SCR Detection Option
    • SCR/Load Fusing
  • 4233 NEMA 1 
    • 3 Leg, 3 Phase
    • MaxPac III DOT Fired SCR
    • Shorted SCR Detection Option
    • SCR/Load Fusing
  • 4234/35 NEMA 4 or 4X
    • 2 Leg, 3 Phase
    • Up to 6 Circuits
    • Load Management Option
    • Load Fusing
    • ​Load Management Option: Distributes Firing of SCRs to Even Out the Demand. Great for Systems Using Generators

Common Features

  • Ammeters
  • Voltmeters
  • Temperature Controller
  • Overtemperature Controller with manual reset
  • Ground Fault Monitor
  • Fused Control Power Transformer
  • Manual Disconnect Switch
  • Power "ON" Pilot Lamp
  • Automatic Shutdown Device for Overtemperature Protection
  • Remote Shutdown Interlock Terminals
  • Enclosure Heater
  • Drawings for Record
  • Installation and Operation Manual

Ordering Information
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