Panduit CLRCVR2-1 Clear HTAP Cover for HTCT Terminal Blocks
Overview
The Panduit CLRCVR2-1 is a clear polycarbonate finger-safe cover designed specifically for HTCT terminal blocks in the HTAP series. At 5.10 in × 1.66 in × 1.40 in, it snaps over exposed termination points to provide personnel protection and visual access simultaneously — you can inspect conductor seating and labeling without removing the cover. If you're wiring industrial panels, distribution enclosures, or high-density control cabinets where live terminals must remain visible during inspection, this is the cover to specify. CLRCVR2-1 (often searched as CLRCVR2 1) is a direct Panduit factory-new component, not an aftermarket substitute.
Key Features
- 600V Max Voltage Rating: Rated for 600V circuits, which covers the vast majority of industrial control and power distribution applications without derating concerns. Specify this on any panel up to 600V without a second thought.
- UL94 V-0 Flammability Rating: V-0 is the highest standard UL94 flame-retardant classification — the material self-extinguishes within 10 seconds and produces no flaming drips. In enclosed panel environments where ignition sources exist, V-0 is the correct specification, not V-2.
- 28 Minimum Limiting Oxygen Index: An LOI of 28 means the material requires at least 28% oxygen concentration to sustain combustion — well above the 21% ambient air level. This is a quantitative confirmation of flame resistance beyond just the UL94 rating, relevant for FM-inspected facilities.
- 90°C Maximum Temperature Rating: Sustained 90°C tolerance handles the thermal environment inside densely populated enclosures running heavy conductor loads. If your panel regularly runs hot under full load, this rating ensures the cover won't distort or degrade over time.
- Clear Polycarbonate Construction: Transparency is functional here — maintenance personnel can visually confirm wire insertion depth and terminal engagement without opening the cover or breaking a safety seal. Reduces troubleshooting time on terminal blocks that aren't readily accessible.
- Precise Dimensional Fit (5.10 in × 1.66 in × 1.40 in): Dimensioned specifically for HTCT terminal blocks. Using a non-matched cover risks poor engagement, finger-safe gaps, or interference with adjacent components. CLRCVR2-1 is the correct part for this terminal family — not a universal-fit workaround.
Integration & Compatibility
The CLRCVR2-1 is designed for use with Panduit HTCT series terminal blocks. Verify your terminal block model against Panduit's HTAP/HTCT compatibility matrix before ordering — cover geometry is terminal-specific and dimensional mismatches are not correctable in the field. This cover does not modify the electrical rating of the underlying terminal block; the 600V cover rating must be equal to or greater than the terminal's own rating for a compliant installation.
Frequently Asked Questions
Q: What terminal blocks is the CLRCVR2-1 compatible with?
A: The CLRCVR2-1 is designed for use with Panduit HTCT series terminal blocks in the HTAP cover family. Confirm compatibility against Panduit's HTAP/HTCT product matrix for your specific terminal model.
Q: What is the voltage rating of the CLRCVR2-1?
A: The CLRCVR2-1 is rated for a maximum of 600V, covering the majority of industrial control and power distribution panel applications.
Q: What flammability rating does the CLRCVR2-1 carry?
A: It carries a UL94 V-0 flammability rating — the highest classification, meaning the material self-extinguishes and produces no flaming drips, making it appropriate for enclosed panel environments.
Q: What is the maximum operating temperature for the CLRCVR2-1?
A: The cover is rated to a maximum of 90°C, handling the thermal conditions found inside densely loaded industrial enclosures.
Q: What are the physical dimensions of the CLRCVR2-1?
A: The cover measures 5.10 in (length) × 1.66 in (width) × 1.40 in (height).
Q: Why does the Limiting Oxygen Index matter for this cover?
A: The CLRCVR2-1 has a minimum Limiting Oxygen Index of 28, meaning it requires an oxygen concentration above ambient air (21%) to sustain combustion. This provides a quantitative measure of flame resistance relevant for FM-inspected or fire-code-sensitive facilities.
The CLRCVR2-1 is a detail that separates a well-engineered panel from one that passes inspection on paper but fails in practice. The UL94 V-0 rating combined with a 90°C maximum temperature tolerance means this cover is spec'd for real industrial thermal loads — not just lab conditions. When I'm reviewing a panel build for a warehouse automation project or a security head-end enclosure, the terminal cover material rating is one of the first things I check, and V-0 with a 28 LOI is the correct answer every time.
Technical Highlights:
- UL94 V-0 + LOI 28: Two independent flame-resistance metrics on a single component. V-0 confirms self-extinguishing behavior under direct flame; LOI 28 confirms the material won't sustain combustion in normal air. Together they satisfy both UL and FM inspection criteria without requiring substitutions.
- 600V Rating: Covers standard industrial single-phase and three-phase distribution panels without derating. Specifying a lower-rated cover on a 600V circuit is a code violation waiting to happen — CLRCVR2-1 closes that gap.
- 90°C Thermal Tolerance: In a fully loaded control cabinet running 40–50°C ambient plus conductor heat rise, cover materials rated below 90°C can deform over months. This rating gives a realistic service life in dense enclosures.
Deployment Considerations:
- Confirm your specific HTCT terminal block model against Panduit's HTAP cover compatibility table before ordering — cover geometry is not universal across the HTCT family, and field modifications are not an option.
- The cover's 5.10 in length is a hard fit constraint: if you have modified or non-standard DIN rail spacing adjacent to the terminal block, verify clearance before committing to a quantity order.
The CLRCVR2-1 is the right spec for industrial automation panels, security system power distribution enclosures, and access control head-end cabinets where live HTCT terminals must remain visible to maintenance staff without removing finger-safe protection during routine inspections.
