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ManualsBrandsJohnson Controls ManualsA421 Series Temperature ControlsSingle Stage Digital Temperature Control w/ Off Cycle Defrost (120/240VAC)
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The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc. www.johnsoncontrols.com
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System 450™ Series Modular Controls (Continued)
System 450 Control Series
C450SBN-3C and C450SCN-3C Expansion Modules with Relay Output
Product C450SBN-3C: System 450 Expansion Module with one SPDT output relay
C450SCN-3C:
System 450 Expansion Module with two SPDT output relays
Power Consumption C450SBN-3C: 0.8 VA maximum
C450SCN-3C: 1.2 VA maximum
Supply Power Internal Supply Power: C450YNN-1C Power Supply Module
External Supply Power: 24 VAC (20 to 30 VAC) Safety Extra-Low Voltage (SELV) (Europe), Class 2 (North America),
50/60 Hz, 10 VA minimum
Note: A System 450 control module or module assembly can use an internal or an external supply power source, but
must not be connected to both simultaneously.
Ambient Operating Conditions Temperature: -40 to 66C (-40 to 150F)
Humidity: Up to 95% RH noncondensing; maximum dew point 29C (85F)
Ambient Shipping and Storage
Conditions
Temperature: -40 to 80C (-40 to 176F)
Humidity: Up to 95% RH noncondensing; maximum dew point 29C (85F)
Output Relay Contacts General: 1/2 HP at 120/240 VAC, SPDT
Specific: AC Motor Ratings 120 VAC 208/240 VAC
AC Full-Load Amperes: 9.8 A 4.9 A
AC Locked-Rotor Amperes: 58.8 A 29.4 A
_____________________________________
10 Amperes AC Noninductive at 24/240 VAC
Pilot Duty: 125 VA at 24/240 VAC
Control Construction Independently mounted control, surface mounted with Lexan® 950 enclosure suitable for DIN rail mounting or direct
mounting to a hard, even surface.
Dimensions (H x W x D) 127 x 61 x 61 mm (5 x 2-3/8 x 2-3/8 in.)
Weight C450SBN-3C: 172 g (0.38 lb)
C450SCN-3C: 186 g (0.41 lb)
Compliance North America: cULus Listed; UL 60730, File E27734;
FCC Compliant to CFR47, Part 15, Subpart B, Class B
Industry Canada (IC) Compliant to Canadian ICES-003, Class B limits
Europe: CE Mark – Johnson Controls, Inc. declares that this product is in compliance with the essential requirements
and other relevant provisions of the EMC Directive and the Low Voltage Directive.
Australia: Mark: C-Tick Compliant (N1813)
C450YNN-1C Power Supply Module
Product C450YNN-1C: System 450 Power Supply Module; 120 or 240 VAC stepdown to 24 VAC Class 2 (North America) or
SELV (Europe)
Supply Power 110/120 VAC or 220/240 VAC at 50/60 Hz (100 mA maximum)
Secondary Power 24 VAC, 10 VA
Ambient Operating Conditions Temperature: -40 to 66C (-40 to 150F)
Humidity: Up to 95% RH noncondensing; maximum dew point 29C (85F)
Ambient Shipping and Storage
Conditions
Temperature: -40 to 80C (-40 to 176F)
Humidity: Up to 95% RH noncondensing; maximum dew point 29C (85F)
Control Construction Independently mounted control, surface mounted with Lexan® 950 enclosure suitable for DIN rail mounting or direct
mounting to a hard, even surface.
Dimensions (H x W x D) 127 x 61 x 61 mm (5 x 2-3/8 x 2-3/8 in.)
Weight C450YNN-1C: 390 gm (0.86 lb)
Compliance North America: cULus Listed; UL 60730, File E27734:
FCC Compliant to CFR47, Part 15, Subpart B, Class B
Industry Canada (IC) Compliant to Canadian ICES-003, Class B limits
Europe: CE Mark – Johnson Controls, Inc. declares that this product is in compliance with the essential requirements
and other relevant provisions of the EMC Directive and the Low Voltage Directive.
Australia: Mark: C-Tick Compliant (N1813)