Ordering
Controller
Accessories
(for spares and replacement purposes):
Model
Description
Comments
Code no.
AK-RC 251
AK-RC 251 Gen. 2,5 O/P, Single phase
Includes:
• 1 x 1.5 m, NTC 10K sensor
• 1 x 3 m, NTC 10K sensor
• 2 x 2 caps to provide IP65 protection after installation
080Z5000
Name
Features
Qty
Code no.
3.5 m, NTC 10K Sensor
Thermo plastic rubber probe
1
084N3210
8.5 m, NTC 10K sensor
Thermo plastic rubber probe
50
084N3208
1.5 m, NTC 10K sensor
Stainless steel probe
150
084N3200
8 | AN36292867744601-000101
© Danfoss | DCS (vt) | 2021.02
Technical specifications
Features
Specifications
Power supply
100 - 240 V~, 50 - 60 Hz
Maximum input power in the operation
8.1 VA
Maximum nominal current
15 A
Relay DEFROST - SPDT - 20 A
NO
EN60730-1: 15 (15) A 250 V~
UL-60730: 9 FLA 54 LRA, 240 V AC
UL-60730: RES 12 A, 240 V AC)
NC
EN60730-1: 15 (13) A 250 V~
UL-60730: 6 FLA 36 LRA, 240 V AC
UL-60730: RES 6 A, 240 V AC
Relay FAN - SPST - 16 A
EN60730-1: 12 (9) A 250 V~
UL-60730: 5 FLA 30 LRA, 240 V AC
UL-60730: RES 10 A, 240 V AC
Relay COOL - SPST - 16 A
EN60730-1: 12 (9) A 250 V~
UL-60730: 5 FLA 30 LRA, 240 V AC
UL-60730: RES 10 A, 240 V AC)
Relay AUX 1 - SPDT - 20 A
NO
EN60730-1: 15 (15) A 250 V~
UL-60730: 9 FLA 54 LRA, 240 V AC
UL-60730: RES 12 A, 240 V AC
NC
EN60730-1: 15 (13) A 250 V~
UL-60730: 6 FLA 36 LRA, 240 V AC
UL-60730: RES 6A, 240 V AC
Relay AUX 2 - SPDT - 16 A
NO
EN60730-1: 12 (9) A 250 V~
UL-60730: 5 FLA 30 LRA, 240 V AC
UL-60730: RES 10 A, 240 V AC
NC
EN60730-1: 10 (8) A 250 V~
UL-60730: 5A, 240 V AC
No. of relay operations
EN60730-1:100.000 operations
Probe temperature range
-58 – 211 ºF
Resolution, setting and differential
0.2 ºF
Thermometric precision
±1.8 ºF
Loading tolerance of the NTC probe at 25 °C
±0.7 ºF
Working ambient temperature
14 – 122 ºF
Storage ambient temperature
-22 – +140 ºF
Protection degree
IP 40 (IP 65 installing the proper glands)
Pollution degree
II acc. UL 60730-1
Construction
Independently mounted acc. UL 60730-1
Control device classification
Built-in assembly, with Type 1.B automatic operation action feature, for use in clean situations,
logical support (Software) class A and continuous operation.
Double isolation between power supply, secondary circuit and relay output.
Temperature during ball-pressure test
Accessible parts: 167 ºF
Parts which position active elements: 257 ºF
Current of radio jamming suppression tests
270 mA
Voltage and current as per EMC tests
207 V, 17 mA
Type of assembly
Fixed internal
MODBUS address
Shown on label
Dimensions
11.42 in (W) x 5.55 in (H) x 3.32 in (D)
Internal buzzer
