DIN Rail Thermocouple Screw Clamp Type Terminal Blocks
- Type:
- Double-level terminal block
- Nominal Voltage:
- 500 V
- Nominal Current:
- 32 A
- Connection Method:
- Screw connection, 1st and 2nd level
- Rated Cross Section:
- 4 mm²
- Cross Section:
- 0.2 mm² - 4 mm²
- Color:
- gray
A drift of just 2 microvolts can compromise entire thermal process runs. When calibration routines reveal unexplained measurement offsets, standard cabinet connections frequently generate parasitic Seebeck voltages. Replacing generic din rail screw terminal block hardware with junction-matched metallurgy stops unwanted thermal EMF right at the connection point.
Why Do Temperature Loops Fail Calibration Under Vibration?
Severe mechanical vibration and continuous thermal cycling loosen standard wire terminations over operating cycles. Choosing a purpose-built thermocouple screw terminal maintains circuit continuity through high-tensile clamping components:
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Preserves Cold Junction Compensation integrity across shifting cabinet ambient temperatures.
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Eliminates micro-gap oxidation to prevent spikes in contact resistance.
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Absorbs mechanical shock without stripping screw threads.
Panel designs gain long-running reliability when built with heavy-duty Screw Type Terminal Blocks rated for sensitive sensor signals.
Hangda JHD5-4C Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage / Ampacity | 500V / 32A |
| Conductor Cross Section | 0.2 - 4.0 mm² |
| Standard Mounting Rail | TS 35 DIN Rail |
| Insulation Housing | PA66 (UL 94 V-0) |
Dual-Level Space Optimization for High-Density Enclosures
Cramped control enclosures leave little room for sensor expansion. Implementing a multi-tier clamp terminal block doubles channel capacity across existing panel rails:
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Upper and lower levels provide complete circuit isolation.
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High-grade PA66 housing shields low-voltage signals from adjacent electrical interference.
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Funnel wire guides speed up termination without stray strand shorts.
Tired of troubleshooting erratic temperature curves or crowded wire ducts? Standardize panel builds on Hangda clamp type terminal blocks. Download dimension files and request testing units directly at the Hangda official product page.
| Model | Function | Wire IEC cross-section | Wire UL | Thickness | Maximum current | Number of packages | Thickness/Height( )/Width mm |
Rated voltage/rated current/rated cross-sectior |
| JHD5-4C |  |
4 mm² 2.5 mm² 4 mm² |
12 AWG 14 AWG 12 AWG | 6.2 mm | 32 A | 100 | 6.2/62/56 | 500 V/32 A/4 mm² |
Specfication:
| End cover | D4C |
| Cross-connection 10-Polo,Separable | ZL2-4 ZL3-4 ZL10-4 |
| Insertion bridge 10-Polo,Separable | BLS2-4 BLS3-4 BLS10-4 |
| Small Partition | CPK3 |
| Marking tags | ZB6 |
| Screw/Tightening torque(Nm) | M3/0.6 |
| Material | PA |
| Flame retardant rating UL-94 | V0 |
| Dimensions |  |
With universal mounting feet for standard top-hat(Ω profile) and G-profile DIN rail mounting.
