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Seifert KH 501-150 150W 110-240V AC/DC PTC Enclosure Heater, DIN Rail Mount
Compact 150W Seifert control cabinet heater with a self-regulating PTC resistor, wide 110-240V AC/DC input range, DIN-rail mounting clip, and IP20 protection.
Why Choose the Seifert KH 501-150?
The Seifert KH 501-150 is a compact 150W convective control cabinet heater designed to help maintain a stable minimum temperature inside electrical enclosures. Its self-regulating PTC resistor automatically adjusts heating output in response to the surrounding temperature, helping reduce unnecessary power use while protecting sensitive components from condensation-related problems.
A space-saving PC plastic housing, DIN-rail mounting clip, and two-screw terminal block make this enclosure heater well suited for control panels where installation room is limited. The wide 110-240V AC/DC operating range also simplifies selection for equipment used across different power systems.
🔥 150W Heating Output
Provides convective heat for compact electrical and automation enclosures
⚡ Wide Voltage Range
Operates on 110-240V AC/DC for flexible control cabinet integration
🌡️ Self-Regulating PTC
Adjusts heating power as the surrounding temperature changes
📏 Compact DIN-Rail Design
Space-saving housing mounts quickly inside protected enclosures
⚠️ Confirm Enclosure Conditions and Electrical Requirements
Verify the available DIN-rail space, 110-240V AC/DC supply, wiring size, and required 150W heating capacity before ordering. This model is rated IP20 and should be installed inside a suitable protective enclosure.
📋 How This PTC Cabinet Heater Helps Protect Equipment
Temperature changes inside a control cabinet can create humidity and condensation that may damage electrical components or interrupt equipment performance. The KH 501-150 disperses warm air by natural convection to help limit moisture buildup and maintain a safer minimum enclosure temperature.
Key Features and Benefits
- 150W convective control cabinet heater
- Wide 110-240V AC/DC rated voltage range
- Self-regulating PTC resistor heating element
- DIN-rail mounting clip for compact installation
- PC plastic housing
- Two-screw terminal block for 14 AWG stranded or rigid wire
- Operating temperature range of -49°F to 158°F (-45°C to 70°C)
- IP20 protection class
- CE and cURus approvals
- Helps reduce condensation inside electrical enclosures
Technical Specifications
| Brand |
Seifert |
| Model |
KH 501-150 |
| Product Type |
Convective PTC Enclosure Heater |
| Heating Power at 68°F |
150W |
| Rated Voltage |
110-240V AC/DC |
| Maximum Current |
9.5A |
| Heating Element |
Self-Regulating PTC Resistor |
| Operating Temperature |
-49°F to 158°F (-45°C to 70°C) |
| Dimensions |
8.66 in. H x 2.32 in. W x 2.4 in. D |
| Housing Material |
PC Plastic |
| Connection |
2-Screw Terminal Block for 14 AWG Stranded or Rigid Wire |
| Mounting |
DIN Rail |
| Ingress Protection |
IP20 |
| Approvals |
CE, cURus |
🔧 Installation and Setup Overview
1. Confirm Capacity: Verify that 150W of heating output is appropriate for the enclosure volume, ambient conditions, and desired minimum temperature.
2. Check Power: Confirm that the available supply is within the 110-240V AC/DC rated range.
3. Mount on DIN Rail: Place the heater where rising warm air can circulate through the control cabinet without blocked clearance.
4. Complete Wiring: Use the two-screw terminal block with compatible 14 AWG stranded or rigid conductors.
5. Verify Operation: Energize the heater and confirm stable operation before placing the enclosure into service.
Follow applicable electrical codes and the manufacturer’s installation instructions.
🏭 Typical Applications
Typical applications include industrial control panels, automation cabinets, outdoor electrical enclosures, instrumentation boxes, and equipment housings that require condensation control or minimum-temperature protection.
✅ Selection Notes
Select this model when a compact, fan-free 150W heater and a wide 110-240V AC/DC input range are preferred. For applications that need forced air circulation or higher heating capacity, compare Seifert fan-assisted enclosure heater models.
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