Description
The Honeywell 05701-A-0327 (Iss. 3) is a specialized Double SPCO (Single-Pole Changeover) Relay Card engineered specifically for Honeywell Analytics System 57 gas detection architectures. Designed to plug into System 5701 controller racks, it provides dependable, voltage-free contact outputs for critical alarm levels (A1 and A2) as well as fault indicators. Below is the technical datasheet outlining ten core parameter specifications for this unit:
| Parameter | Specification Details |
| Manufacturer | Honeywell Analytics / Zellweger Analytics |
| Model Designation | 05701-A-0327 (Iss. 3) |
| Product Type | Double SPCO Relay Card (System 5701 Spare) |
| System Compatibility | Honeywell System 57 / 5701 Gas Detection Controller |
| Relay Contact Ratings | 5A @ 250V AC / 32V DC (non-inductive load) |
| Relay Operation Modes | Selectable (Latching / Non-Latching, Energized / De-Energized) |
| Power Consumption | Approximately 0.8 W |
| Terminal Capacity | Accepts up to 2.5 mm² (14 AWG) cables |
| Operating Temperature | -5°C to +55°C |
| Item Weight | Approximately 155 grams (0.155 kg) |
📖 Product Usage Instructions
- 🛠️ Power Isolation: Always ensure that the System 57 sub-rack power supply is completely turned off and isolated before inserting, removing, or servicing the relay card.
- 🔌 Secure Insertion: Align the printed circuit board card carefully within the designated rear rack slots of the controller enclosure, pressing firmly to engage backplane connectors securely.
- 🔧 Wiring Verification: Connect external alarm loops, horns, or shutdown systems to the appropriate heavy-duty screw terminals, verifying wire gauge and contact load limits (\le 5A at 250VAC/32VDC non-inductive).
- 🧪 Functional Testing: Perform a complete system alarm test via the controller interface to verify proper relay switching, latching behavior, and correct fault response mapping.
❓ Frequently Asked Questions (Q&A)
- Q: What is the primary function of the Honeywell 05701-A-0327 card?
A: It serves as a double SPCO relay card designed to provide voltage-free contact outputs for A1, A2 alarms, and fault conditions in Honeywell System 57 controllers.
- Q: Are the relay operation modes configurable?
A: Yes, the relays feature selectable options including latching/non-latching and normally energized/de-energized configurations.
- Q: What load capacity do the relay contacts support?
A: Each relay contact is rated for up to 5A at 250V AC or 32V DC under non-inductive load conditions.
🔍 Recommended Alternative Models & Series
To support your industrial gas and fire detection system maintenance, spare parts management, and system expansions, here are ten alternative modules and series from Honeywell Analytics:
- Honeywell 05701-A-0325 DC Input Card
- Honeywell 05701-A-0301 Single Channel Control Card (4-20mA)
- Honeywell 05701-A-0302 Single Channel Control Card (Catalytic)
- Honeywell 05701-A-0351 Control Card (System 5701)
- Honeywell 05704-A-0123 Hex Relay Interface Card
- Honeywell 05704-A-0133 Fire Relay Interface Assembly
- Honeywell 05701-A-0283 Analog Sensor Drive Module (4-20mA)
- Honeywell Searchpoint Optima Plus Point Infrared Gas Detector
- Honeywell Sensepoint XCD Gas Monitor
- Honeywell Safety Manager Safety Processor Modules


