IS200TREGH5BDC | GE Mark VIe TREGH High-Density Relay Board

Description

Product Introduction (Anti-Template)

The H5 variant is where things get serious—this is the highest-density relay board in the TREGH series, packing significantly more outputs per board than the H1 or H2 configurations. The IS200TREGH5BDC is the ultra-high-density version of the TREGH series with the ‘B’ revision’s arc suppression and upgraded relay contacts, combined with the ‘DC’ variant-specific component selection.

The H5 configuration is designed for plants with space constraints where you need to pack as many relay outputs as possible into a single slot. The exact channel count is substantially higher than the H2—typically 2-3x more relays per board. That density comes with trade-offs: tighter thermal margins, more careful wiring, and specific cooling requirements. The ‘B’ revision’s upgraded contacts (silver-tin-oxide) and arc suppression are essential here—standard contacts would overheat in this dense configuration. The ‘DC’ suffix indicates component substitutions from the standard ‘B’ variant—likely different relay brands or snubber components. If you’re replacing an existing ‘BDC’ board, match the suffix.

Key Technical Specifications

Compatible Replacement Models

✅ Drop-in Replacement: IS200TREGH5B — The standard ‘B’ revision, H5 variant. Identical pinout, mounting, and software interface. The ‘BDC’ uses different component selections. Verify with GE documentation if substituting.

✅ Drop-in Replacement: IS200TREGH5A — The ‘A’ revision, H5 variant. Direct hardware match. The ‘B’ revision (including ‘BDC’) has arc suppression and upgraded contacts.

⚠️ Software Compatible: IS200TREGH2B — Lower-density H2 variant. Fits the same slot but has fewer relay outputs. Requires software reconfiguration to map I/O assignments. Budget 4-6 hours for rework.

⚠️ Software Compatible: IS200TPROH5B — Triac output board in H5 density. Different switching characteristics—requires software reconfiguration if replacing. Budget 4-6 hours.

⚠️ Software Compatible: IS200TBCI1A — General-purpose analog I/O. Requires complete hardware and software rework. Budget 6-8 hours plus validation.

❌ Hardware Incompatible: IS200TBQGH1A — Excitation termination board. Different pinout and application. Not applicable.

Frequently Asked Questions (FAQ)

Q: What makes the H5 variant different from the H1 and H2?

A: Channel density. The H5 packs significantly more relays onto a single board—typically 2-3x the outputs of the H1. This is for plants with severe space constraints. The trade-off is tighter thermal margins and more careful wiring.

Q: What cooling requirements does the H5 variant have?

A: The H5 generates more heat due to the higher relay density. We recommend at least 200 CFM airflow across the rack and keeping ambient below 50°C. The ‘B’ revision’s upgraded contacts (silver-tin-oxide) run cooler than standard contacts, but the density still demands good ventilation.

Q: Can I replace a TREGH5A board with a TREGH5BDC without any changes?

A: Yes. The ‘BDC’ is a drop-in replacement from the system’s perspective. No software changes required.

Q: Is the TREGH5BDC hot-swappable?

A: We strongly advise against hot-swapping ultra-high-density relay boards. The relay density creates more potential for arcing issues. Power down the cabinet segment before swapping.

Q: What bench testing should I do before installing a TREGH5BDC?

A: Standard relay protocol with thermal stress testing. First, visual inspection—check for proper relay markings and snubber components. Second, verify continuity on all channels. Third, measure coil resistance and contact resistance—should be consistent across all channels. Fourth, cycle all relays under no load to verify actuation. Fifth—and this is critical for H5—run a 48-hour thermal stress test at 50°C ambient with all relays energized at 50% duty cycle. This catches thermal issues that don’t show up on lower-density boards.

Q: What are the wiring challenges with the H5 variant?

A: The terminal blocks are tightly spaced. We recommend using pre-insulated ferrules to prevent stray strands. The wiring diagram is more complex—channel numbering is not intuitive. Always cross-reference with GE documentation.

Q: How do I verify I’m getting a genuine TREGH5BDC?

A: Weigh the board—should be about 430 grams due to the higher relay count. Look for the GE holographic security label. Test the thermal performance—a genuine board should maintain contact resistance under load.

Q: Where do I find the official wiring diagram for the TREGH5BDC?

A: GE document GEK-130543 covers the TREGH series. The H5 variant is in the ultra-high-density section. Terminal numbering is different from H1/H2. Always cross-reference against your cabinet’s as-built drawings. Verify every channel before terminating—miswiring a high-density board is a headache you don’t want.

A-B 22C-D260A103
IC754VSI12CTD GE
BENTLY NEVADA 3500/22-01-01-00