Discontinuation of System 450 Modular Electronic Controls

Текст документа

PRODUCT DISCONTINUATION
Building Automation Systems and Controls

May 22, 2026

Discontinuation of System 450 Modular Electronic
Controls
                                                                                                                         LIT-12001588

• Building Solutions:                   • IDC                                    • OEMs
  APAC, EU, LATAM, MEA, NA

Overview
Johnson Controls® will discontinue the PENN® System 450 line of modular electronic controls. You can replace System 450 assemblies
with the System 550 line of modular electronic controls.

Important: System 550 modules are not backwards compatible with System 450 modules. When you replace a System 450 module,
you must replace all the modules in the assembly with the required System 550 modules.

Last time buy
Effective immediately until July 31, 2026, customers can place last time buy orders for all currently active System 450 part numbers. Last
time buy orders must have a requested ship date of October 23, 2026 or earlier. For a complete list of orderable part numbers, see
Table 1 and Table 2. After July 31, 2026, Johnson Controls will no longer accept purchase orders for System 450 products. Johnson
Controls continues to honor the warranty for System 450 series controls.

Product availability
Place your last time buy orders as soon as possible. Product availablity is on a first come, first served basis.

Support
For questions and for help with your transition from System 450 controls to System 550 controls, contact your Johnson Controls sales
representatives and Johnson Controls internal support teams.

                                                  © 2026 Johnson Controls. All rights reserved.
PRODUCT DISCONTINUATION

Last active System 450 products
Table 1: System 450 part numbers

 Part number                                        Description
 C450CBN-4C                                         Control module, 1 relay output

 C450CCN-4C                                         Control module, 2 relay outputs

 C450CCU-4C                                         Evaporator control module, 2 relay outputs

 C450CEN-1C                                         Communications module, ethernet

 C450CPN-4C                                         Control module, 1 analog output

 C450CPW-400C                                       Control module, hybrid analog output

 C450CQN-4C                                         Control module, 2 analog outputs

 C450CRN-1C                                         Communications module, Modbus

 C450RBN-3C                                         Reset control module, 1 relay output

 C450RCN-3C                                         Reset control module, 2 relay outputs

 C450SBG-4C                                         Expansion module, 1 relay output, low voltage

 C450SBN-4C                                         Expansion module, 1 relay output

 C450SCG-4C                                         Expansion module, 2 relay outputs, low voltage

 C450SCN-4C                                         Expansion module, 2 relay outputs

 C450SPN-4C                                         Expansion module, 1 analog output

 C450SQN-4C                                         Expansion module, 2 analog outputs

 C450YNN-4C                                         Power module

To upgrade from a System 450 assembly to a System 550 assembly, replace every module. For replacement information, see the
following table. For more information about System 550 controls, refer to the Johnson Controls Knowledge Exchange portal.

Table 2: System 450 to System 550 cross reference

 Discontinued System 450 module                                              Functional replacement System 550 module
 Part number      Description                                                Part number             Description
 C450CBN-4C       Control module, 1 relay output                             C550CCN-001C            Control module, 2 relay outputs

 C450CCN-4C       Control module, 2 relay outputs

 C450CCU-4C       Evaporator control module, 2 relay outputs

 C450CEN-1C       Communications module, ethernet                            No replacement

 C450CPN-4C       Control module, 1 analog output                            C550CQN-001C            Control module, 2 analog outputs

 C450CPW-400C     Control module, hybrid analog output

 C450CQN-4C       Control module, 2 analog outputs

                                                     © 2026 Johnson Controls. All rights reserved.
PRODUCT DISCONTINUATION

 Discontinued System 450 module                                               Functional replacement System 550 module
 Part number         Description                                              Part number         Description
 C450CRN-1C          Communications module, Modbus                            No replacement

 C450RBN-3C          Reset control module, 1 relay output                     C550CCN-001C        Control module, 2 relay outputs

 C450RCN-3C          Reset control module, 2 relay outputs

 C450SBG-4C          Expansion module, 1 relay output, low voltage            No replacement

 C450SCG-4C          Expansion module, 2 relay outputs, low voltage           No replacement

 C450SBN-4C          Expansion module, 1 relay output                         C550SCN-1C          Expansion module, 2 relay outputs

 C450SCN-4C          Expansion module, 2 relay outputs

 C450SPN-4C          Expansion module, 1 analog output                        C550SQN-1C          Expansion module, 2 analog outputs

 C450SQN-4C          Expansion module, 2 analog outputs

 C450YNN-4C          Power module                                             C550YNN-1C          Power module

                           Available documents on Knowledge Exchange - CLICK HERE

Discontinuation schedule
■ Last orderable date: July 31, 2026
■ Last shipping date: October 23, 2026

For further information, contact:

Keith Gifford
Senior Product Manager, PENN Controls
keith.h.gifford@jci.com

All specifications and other information shown were current as of document revision and are subject to change without notice.
www.johnsoncontrols.com

                                                        © 2026 Johnson Controls. All rights reserved.

Позиції каталогу з цим документом

• C450RBN-3C — Модуль управления RESET 1 STAGE
• C450RCN-3C — Модуль управления RESET 2 STAGE

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