IS200VPROH1AC | 24V Protection Relay Input H1AC

Description

Product Introduction (Anti-Template)

The ‘AC’ suffix on this protection relay board adds a component variant to the safety-grade ‘A’ revision platform—a configuration where GE made specific component selections that may affect performance or long-term reliability in protection circuits. The IS200VPROH1AC is a VPRO series board with safety-grade protection relay outputs, the ‘A’ revision improvements, and the ‘C’ variant-specific component selection.

What does ‘AC’ mean in practice? The ‘C’ portion typically indicates component substitutions—often different protection relays, safety-grade components, or connectors driven by supply chain changes or customer requirements. The board retains all functional characteristics of the standard VPROH1A (redundant trip paths, fail-safe outputs, improved trip response) but may have slightly different trip timing, contact ratings, or long-term stability depending on the substituted parts. If you’re replacing an existing ‘AC’ board, match the suffix. If you’re substituting a standard ‘A’ for an ‘AC’, verify the component differences with GE documentation or your OEM.

Key Technical Specifications

Compatible Replacement Models

✅ Drop-in Replacement: IS200VPROH1A — The standard ‘A’ revision. Identical pinout, mounting, and software interface. The ‘AC’ uses different component selections. Most applications won’t see a difference.

✅ Drop-in Replacement: IS200VPROH1 — The base revision. Direct hardware match. The ‘A’ revision (including ‘AC’) has improved trip response time.

⚠️ Software Compatible: IS200TRPSH1A — Power switching relay board. Similar but may have different safety ratings. Verify compatibility with your protection system.

⚠️ Software Compatible: IS200TREGH1A — General-purpose relay board. Not safety-rated. May not meet safety requirements.

❌ Hardware Incompatible: IS200TBQGH1A — Excitation termination board. Different pinout and application.

Frequently Asked Questions (FAQ)

Q: What does the ‘AC’ suffix mean on this VPRO board?

A: The ‘AC’ suffix indicates a component variant within the ‘A’ revision family. It’s not a standard upgrade path—typically, ‘AC’ means GE used different components (protection relays, safety-grade components, or connectors) due to supply chain changes or a customer request. The board functions identically from a wiring perspective.

Q: Can I replace an ‘AC’ board with a standard ‘A’ revision?

A: Usually yes—the boards are pin-for-pin compatible. However, some ‘AC’ variants have different trip timing or contact ratings. If those differences matter to your protection system, match the suffix.

Q: How do I know if I need the ‘AC’ variant?

A: Check your original bill of materials or the board’s placement in your system. If the board you’re replacing has an ‘AC’ suffix, replace it with the same suffix.

Q: Is the VPROH1AC hot-swappable?

A: We strongly advise against hot-swapping protection relay boards. Power down the cabinet segment before swapping.

Q: What bench testing should I do before installing a VPROH1AC?

A: Standard protection relay protocol with component verification. First, visual inspection. Second, verify continuity. Third, apply power and verify trip response timing—may differ from standard ‘A’. Fourth, test fail-safe behavior.

Q: How do I verify I’m getting a genuine VPROH1AC?

A: Check component markings against GE’s documented parts list. Weigh the board; should be about 365 grams. Look for the GE holographic security label.

Q: Where do I find the official wiring diagram for the VPROH1AC?

A: GE document GEK-130690 covers the VPRO series. The ‘AC’ suffix typically does not change the wiring diagram. Always cross-reference against your cabinet’s as-built drawings. Verify every channel before terminating.

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