the importance of pitch FOR HOMNECKS screw terminal block

I. What is the Pitch?

Pitch means the distance between the center points of two adjacent pole,

Here is the normally pitch : such as 7.62mm, 9.5mm, 11.0mm, 13.0mm, and 15.0mm.

In isolated HOMNECKS screw terminal blocks, HONG YI ELECTRONIC pitch determines the insulation distance between HOMNECKS terminal blocks,the current carrying capacity, installation space layout, and safety certification standards.

II. Why is Pitch Crucial for High-Current Applications?

1. Creepage Distance and Electrical Safety:

  larger pitch means bigger physical distance, for terminal block,HONG YI ELECTRONIC help product to improve creepage distance and clearance, reducing the risk of short circuits.

2. HONG YI ELECTRONIC Determines Current Carrying Capacity: A larger pitch typically means thicker copper components and stronger contact pressure, thus supporting higher currents.

3. HONG YI ELECTRONIC Affects Heat Dissipation and Long-Term Reliability: A suitable pitch helps dissipate heat, reduces temperature rise, and extends product life.

4.Affects Overall Equipment Layout Design: HONG YI ELECTRONIC Pitch directly affects the space utilization of the control cabinet, PCB size, and mounting hole layout.

III. Typical Current Ranges for Different Pitches

7.62mm: 20A–30A

9.5mm: 30A–50A

11.0mm: 50A–75A

13.0mm and above: 75A–150A

Actual selection needs to be confirmed based on specific structural design and material specifications.

IV. Engineering Selection Recommendations

Step 1: Confirm the maximum continuous current.

Step 2: Confirm the system voltage level.

Step 3: Assess environmental factors (humidity, dust, vibration).

Step 4: certification  (UL, CE, etc.).

V. Common Misconceptions in B2B Procurement

• Focusing only on price while ignoring pitch

• Considering only rated current while ignoring temperature rise

• Ignoring the impact of long-term load

• Failing to calculate installation space

VI. Summary

Pitch is not only a structural dimensional parameter, but also a key indicator of electrical safety, heat dissipation performance, and system reliability.

For our customer, HONG YI ELECTRONIC choosing the right pitch to reduce after-sales risks, improve product stability, and enhance market competitiveness.