OMRON K8AK-THPower Supplies / In Addition/ Measuring / Motor Protective Relays/Component Protective Components
OMRON K8AK-TH Power Supplies / In Addition
OMRON K8AK-TH Dimensions
/Images/l_3241-25-177134-198x198.jpglast update: August 7, 2014
• Excessive temperature increases can be prevented and abnormal temperatures can be monitored.
• Temperature monitoring in slim design with a width of just 22.5 mm.
• Rotary switches simplifies temperature settings.
• Universal-input support for thermocouple or platinum resistance thermometer sensor input.
• Change the output relay between normally open and normally closed operation.
• Alarm status identification with LED indicator.
• Self-holding output.
• Alarm output status can be retained even if the power supply is turned OFF.
last update: August 7, 2014
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OMRON K8AK-TH dimension
K8AK-TH Temperature Monitoring Relay/Dimensionslast update: April 01, 2014
Temperature Monitoring Relay
K8AK-TH
Track Mounting Products (Sold Separately)
DIN Tracks
PFP-100N
PFP-50N
* Dimensions in parentheses are for the PFP-50N.
last update: April 01, 2014
OMRON K8AK-TH catalog
K8AK-TH Temperature Monitoring Relay/Catalog- Catalog
- Manual
- CAD
English
Global Edition
| Catalog Name | Catalog Number [size] | Last Update | |
|---|---|---|---|
 K8AK-TH Catalog | N187-E1-01 [1107KB] | Dec 25, 201820181225 | K8AK-TH Catalog |
| Measuring and Monitoring Relays Application Guide | N222-E1-01 [1649KB] | Jun 01, 201820180601 | Measuring and Monitoring Relays Application Guide |
OMRON K8AK-TH lineup
K8AK-TH Temperature Monitoring Relay/Lineuplast update: April 01, 2014
K8AK-TH (Temperature Input Models)
| Power supply voltage | Type | Output relays | Input types | Setting units (setting range) | Model |
|---|---|---|---|---|---|
| 100 to 240 VAC | Temperature input | 1 relay | Thermocouple or platinum resistance thermometer | Setting unit: 1°C or 1°F (0 to 999°C/°F) | K8AK-TH11S 100-240VAC |
| Thermocouple | Setting unit: 10°C/°F * | K8AK-TH12S 100-240VAC | |||
| 24 VAC/DC | Thermocouple or platinum resistance thermometer | Setting unit: 1°C or 1°F (0 to 999°C/°F) | K8AK-TH11S 24VAC/DC | ||
| Thermocouple | Setting unit: 10°C/°F * | K8AK-TH12S 24VAC/DC |
* Refer to Setting Ranges on Catalog for the setting ranges.
Note: When ordering, designate the power supply specification. Different Relay models are used for 100 to 240 VAC and
24 VAC/VDC.
last update: April 01, 2014
OMRON K8AK-TH specification
K8AK-TH Temperature Monitoring Relay/Specificationslast update: December 25, 2018
Ratings
| Power supply voltage | 100 to 240 VAC 50/60 Hz | 24 VAC 50/60 Hz or 24 VDC | |
|---|---|---|---|
| Allowable voltage range | 85% to 110% of power supply voltage | ||
| Power consumption | 5 VA max. | 2 W max. (24 VDC), 4 VA max. (24 VAC) | |
| Sensor inputs | K8AK-TH11S | Thermocouple: K, J, T, E; Platinum-resistance thermometer: Pt100, Pt1000 | |
| K8AK-TH12S | Thermocouple: K, J, T, E, B, R, S, PLII | ||
| Output relay | One SPDT relay (5 A at 250 VAC, resistive load) | ||
| External inputs (for latch setting) | Contact input | ON: 1 kΩ max., OFF: 100 kΩ min. | |
| Non-contact input | ON residual voltage: 1.5 V max., OFF leakage current: 0.1 mA max. | ||
| Leakage current: Approx. 10 mA | |||
| Setting method | Rotary switch setting (set of three switches) | ||
| Indicators | Power (PWR): Green LED, Relay output (ALM): Red LED | ||
| Other functions | Alarm Mode (upper limit/lower limit), non-fail safe/fail safe selection, output latch, setting protection, temperature unit °C/°F | ||
| Ambient operating temperature | -20 to 55°C (with no condensation or icing) | ||
| Ambient operating humidity | Relative humidity: 25% to 85% | ||
| Storage temperature | -25 to 65°C (with no condensation or icing) | ||
Characteristics
| Measurement accuracy | K8AK-TH11S: ±1% of the setting range or ±4°C, whichever is larger K8AK-TH12S: ±1% of the setting range (±1% FS) | |
|---|---|---|
| hysteresis width | 2°C | |
| Output relay | Rated load Resistive load 5 A at 250 VAC 5 A at 30 VDC Maximum switching capacity: 1,250 VA, 150 W Minimum load: 5 VDC, 10 mA (reference values) Mechanical life: 10 million operations min. Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 operations 3 A at 250 VAC/30 VDC: 100,000 operations | |
| Sampling cycle | 100 ms | |
| Insulation resistance | 20 MΩ (at 500 V) between charged terminals and exposed uncharged parts 20 MΩ (at 500 V) between any charged terminals (i.e., between input, output, and power supply terminals) 20 MΩ (at 500 V) between contacts (open) | |
| Dielectric strength | 2,300 VAC, 50/60 Hz for 1 min between terminals of different charge | |
| Vibration resistance | Frequency: 10 to 55 Hz, 0.35-mm single amplitude 10 sweeps of 5 min each in X,Y, and Z directions | |
| Shock resistance | 100 m/s2, 3 times each in 6 directions along 3 axes | |
| Weight | Approx. 160 g | |
| Degree of protection | IP20 | |
| Memory protection | Non-volatile memory (number of writes: 1 million) | |
| Safety Standards | Approved standards | UL 61010-1 Installation environment (pollution level 2, installation category II) |
| EMC | EN 61326-1 Industrial electromagnetic environment | |
| Application standards | UL 61010-1 (Recognition), Korean Radio Waves Act (Act 10564), CSA: C22.2 No.14 | |
| Terminal screw tightening torque | 0.49 to 0.59 N·m | |
| Crimp terminals | Two solid wires of 2.5 mm2 or two ferrules of 1.5 mm2 with insulation sleeves can be tightened together. | |
| Case color | N1.5 | |
| Case material | PC and ABS, UL 94 V-0 | |
| Mounting | Mounts to DIN Track. | |
| Dimensions | 22.5 × 100 × 90 mm (W × D × H) | |
Setting Ranges
K8AK-TH11S
Centigrade
Fahrenheit
K8AK-TH12S
Centigrade
Fahrenheit
Temperature Input Range
| TH11S | °C | °F | ||
|---|---|---|---|---|
| Input type | Lower limit | Upper limit | Lower limit | Upper limit |
| K | -20 | 1019 | -40 | 1039 |
| J | -20 | 870 | -40 | 1039 |
| T | -20 | 420 | -40 | 740 |
| E | -20 | 620 | -40 | 1039 |
| Pt100 | -20 | 870 | -40 | 1039 |
| Pt1000 | -20 | 870 | -40 | 1039 |
| TH12S | °C | °F | ||
|---|---|---|---|---|
| Input type | Lower limit | Upper limit | Lower limit | Upper limit |
| K | -20 | 1320 | -40 | 2340 |
| J | -20 | 870 | -40 | 1540 |
| T | -20 | 420 | -40 | 740 |
| E | -20 | 620 | -40 | 1140 |
| B | 0 | 1820 | 0 | 3240 |
| R | -20 | 1720 | -40 | 3040 |
| S | -20 | 1720 | -40 | 3040 |
| PLII | -20 | 1320 | -40 | 2340 |
last update: December 25, 2018
- NO. K8AK-TH
- TYPE:Measuring / Motor Protective Relays Component Protective Components Measuring & Monitoring relays
- DATE:2021-06-08
- Associated products:
K8AK-TS / PT Thermistor Motor Protection Relay/Features K8AK / K8DS Series Measuring & Monitoring Relays/Features