Napco BDH Battery Diode Harness
Special Order: typically 2–6 weeks
Ships directly from the manufacturer. This is an estimated lead time, not a guaranteed delivery date.
Availability can change and lead times may be longer. If your project has a deadline, check with us before ordering.
A member of our team will check with the manufacturer and personally reply by email.
Image of 1
Key Features
- Ensures uninterrupted battery backup during AC brownouts by automatically bypassing the charging diode when needed
- Integrates seamlessly with MA3000/PS3000-equipped systems to provide brownout supervision for commercial intrusion and fire applications
- Simple installation connects AUX relay to the on-board PS3000 connector, reducing installation time and complexity
- Automatic restore: bypass is removed when AC power returns, protecting the charging circuit and extending battery life
- Compact, durable harness designed for reliable operation in security, surveillance, and monitoring environments
Quick Specifications
- Product Model
- BDH
- Brand Name
- Napco Security Technologies
- Product Name
- Battery Diode Harness
- Product Type
- Battery
Explore the details
Product information
BDH
Overview
Keep critical intrusion and fire systems powered through AC brownouts with the Napco BDH Battery Diode Harness. This Napco Security Technologies accessory provides automatic diode bypass to deliver reliable battery output when AC voltage drops or fails—protecting surveillance, alarm monitoring, and other security devices from service interruptions. The BDH connects the AUX relay to the on-board PS3000 connector and works with the MA3000 battery charging circuit to enable diode bypass only during brownout or no-AC conditions, then automatically restores normal charging when power returns. For correct operation, program "Enable Brownout Limits on AC Fail" and reserve the AUX output for this function. Designed for commercial fire and burglary installations, the BDH simplifies integration with existing Napco systems and reduces the need for a full PS3000 Power Supply Module when only brownout supervision is required. Durable construction and a compact footprint make it ideal for rack or cabinet installations in security control rooms and monitoring centers. Add the Napco BDH to your system to reinforce battery backup and maintain continuous protection—order or consult your Napco distributor for installation guidance.
Features
- Ensures uninterrupted battery backup during AC brownouts by automatically bypassing the charging diode when needed
- Integrates seamlessly with MA3000/PS3000-equipped systems to provide brownout supervision for commercial intrusion and fire applications
- Simple installation connects AUX relay to the on-board PS3000 connector, reducing installation time and complexity
- Automatic restore: bypass is removed when AC power returns, protecting the charging circuit and extending battery life
- Compact, durable harness designed for reliable operation in security, surveillance, and monitoring environments
| General Information | |
|---|---|
| Brand Name | Napco Security Technologies |
| Manufacturer | Napco Security Technologies |
| Product Name | Battery Diode Harness |
| Product Type | Battery |
| Product Model | BDH |
| Manufacturer Part Number | BDH |
No matching specifications
Try a different term, such as a connector type or resolution.
Plan your purchase
Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- BDH
- Manufacturer part:
- BDH
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsNapco BDH Battery Diode Harness
BDH