DIN Rail Terminal Blocks and Thermocouple Clamp Types
- Type:
- Protective conductor terminal block, When aligning with a feed-through terminal block with the same shape, an end cover must be interposed with insulation voltages of > 690 V
- Number Of Connections:
- 2
- Connection Method:
- Screw connection
- Rated Cross Section:
- 4 mm²
- Cross Section:
- 0.2 mm² - 6 mm²
- Mounting Method:
- PE foot with mounting screw, M2
- Color:
- green-yellow
Industrial control cabinets require stable electrical contact and precise sensor transmission under continuous mechanical vibration. Screw Type Terminal Blocks provide dependable clamping pressure to prevent intermittent connection failures in heavy-duty machinery. Installing a din rail screw terminal block inside a distribution cabinet ensures structured cable routing, low contact resistance, and predictable thermal dissipation across modular control systems.
Temperature Monitoring and Signal Integrity
Signal fidelity in measurement circuits depends on specialized hardware. A clamp terminal block prevents mechanical conductor pull-out while protecting low-voltage instrumentation lines:
-
Dissimilar metal pairings must match specific calibration alloy leads to avoid parasitic Seebeck effect errors.
-
Integrating a thermocouple screw terminal maintains uniform isothermal conditions across sensor junctions without signal attenuation.
Hangda Protective Conductor Performance
Grounding integrity secures equipment reliability. Hangda manufactures the JHD5-4JD protective conductor unit to establish instantaneous electrical continuity directly to standard steel mounting rails. These clamp type terminal blocks feature tin-plated brass current bars and flame-retardant polyamide housings rated UL94V-0.
JHD5-4JD Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage | 800 V |
| Nominal Cross Section | 4 mm² |
| Housing Material | Polyamide 66 (UL94V-0) |
| Mounting Standard | NS 35/7.5, NS 35/15 |
| Contact Resistance | < 0.2 mΩ |
The JHD5-4JD provides clear operational advantages:
-
Automatic ground contact via snap-on metal feet eliminates separate grounding jumpers.
-
Enclosed wire entry funnels prevent conductor strand fraying during field wiring.
| Model | Function | Wire IEC cross-section | Wire UL |
| JHD5-4JD |  |
4 mm² 2.5 mm² 4 mm² |
12 AWG 14 AWG 12 AWG |
| Thickness | Number of packages | Thickness/Height( )/Width mm |
Rated voltage/rated current/rated cross-sectior |
| 6.2 mm | 100 | 6.2/47/42.5 | -/34 A/4 mm² |
Specfication:
| Marking tags | ZB5 |
| 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.
