Ordering information - PENN Controls - A421ABD - A421AED - Electronic Temperature Control - A421 Series Electronic Temperature Control

See Table 1 to order a standard A421 Series Electronic Temperature Control. See Table 2 and Table 3 for more information about A99 sensors, mounting hardware, and other accessories used to install A421 Controls. Contact your nearest Johnson Controls or Penn distributor or sales representative to order these products.

Table 1. A421 Series Electronic Temperature Controls with Off-Cycle Defrost Timer selection chart
Product type	Description
A421ABD-02C	Line-voltage Type 1 Electronic Temperature Control with Off-Cycle Defrost Timer: Type 1 (NEMA), IP20 standard enclosure for DIN rail and surface-mount applications. Rated for 120/240 VAC. Includes timer for On/Off defrost cycle control. Includes an A99BB-200C temperature sensor with 6.6 ft (2.0 m) cable.
A421AED-01C	Line-voltage Type 4X Electronic Temperature Control with Off-Cycle Defrost Timer: Type 4X (NEMA), IP66 watertight enclosure for surface-mount applications. Rated for 120/240 VAC. Includes timer for On/Off defrost cycle control. Includes an A99BB-25C temperature sensor with 9 7/8 in. (0.25 m) cable.
A421AED-02C	Line-voltage Type 4X Electronic Temperature Control with Off-Cycle Defrost Timer: Type 4X (NEMA), IP66 watertight enclosure for surface-mount applications. Rated for 120/240 VAC. Includes timer for On/Off defrost cycle control. Includes an A99BB-200C temperature sensor with 6.6 ft (2.0 m) cable.

Table 2. A99 Temperature Sensors selection chart
Product code¹	Description
A99BA-200C	Positive temperature coefficient (PTC) Temperature Sensor: Standard probe 2 in. (5.1 cm) with 6.6 ft (2.0 m) shielded polyvinyl chloride (PVC) cable; ambient operating temperature range: -40ºF to 212ºF (-40ºC to 100ºC)
A99BB-25C	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 9 7/8 in. (0.25 m) PVC cable; ambient operating temperature range: -40ºF to 212ºF (-40ºC to 100ºC)
A99BB-200C	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 6.6 ft (2.0 m) PVC cable; ambient operating temperature range: -40ºF to 212ºF (-40ºC to 100ºC)
A99BB-300C	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 9.8 ft (3.0 m) PVC cable; ambient operating temperature range: -40ºF to 212ºF (-40ºC to 100ºC)
A99BB-400C	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 13.1 ft (4.0 m) PVC cable; ambient operating temperature range: -40ºF to 212ºF (-40ºC to 100ºC)
A99BB-600C	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 19.7 ft (6.0 m) PVC cable; ambient operating temperature range: -40ºF to 212ºF (-40ºC to 100ºC)
A99BC-25C ¹	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 9 7/8 in. (0.25 m) high-temperature silicon cable; ambient operating temperature range: -40ºF to 248ºF (-40ºC to 100ºC)
A99BC-100C¹	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 3.3 ft (1.0 m) high-temperature silicon cable; ambient operating temperature range: -40ºF to 248ºF (-40ºC to 120ºC)
A99BC-300C¹	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 9.8 ft (3.0 m) high-temperature silicon cable; ambient operating temperature range: -40ºF to 248ºF (-40ºC to 120ºC)
A99BC-500C¹	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 16.4 ft (5.0 m) high-temperature silicon cable; ambient operating temperature range: -40ºF to 248ºF (-40ºC to 120ºC)
A99BC-1500C¹	PTC Temperature Sensor: Standard probe 2 in. (5.1 cm) with 49.2 ft (15.0 m) high-temperature silicon cable; ambient operating temperature range: -40ºF to 248ºF (-40ºC to 120ºC)
A99CB-200C	PTC Temperature Sensor: Extended probe 6 in. (15.2 cm) with 6.6 ft (2.0 m) PVC cable; ambient operating temperature range: -40ºF to 212ºF (-40ºC to 100ºC)
A99CB-600C	PTC Temperature Sensor: Extended probe 6 in. (15.2 cm) with 19.7 ft (6.0 m) PVC cable; ambient operating temperature range: -40ºF to 212ºF (-40ºC to 100ºC)

Table 3. Accessories
Product code	Description
BKT287-1R	12 in. (305 mm) long DIN rail section
BKT287-2R	36 in. (914 mm) long DIN rail section
PLT344-1R	Two end clamps for DIN rail sections
A99-CLP-1	Surface mounting clip for A99B and A99C Series Temperature Sensors
SHL10-603R	Sun shield for A99B and A99C Series Temperature Sensors
BOX10A-603R	PVC enclosure for A99B and A99C Series Temperature Sensors
WEL11A-601R	Copper and brass immersion well for applying sensor in fluid applications
TE-6300W-102	Stainless steel immersion well for applying A99 sensors in fluid applications. A99CB Type sensors with extended probe with this immersion well.

¹ When any A99 Series Temperature Sensor is connected to a standard A421 Control model, the range of displayed temperature values is -40ºF to 212ºF or -40ºC to 100ºC.