Product Overview
The Honeywell 51199942-300 is a dedicated system backup battery assembly engineered specifically for the Honeywell C300 control system, serving as the critical power-retention component that protects controller memory and configuration data during power interruptions. As a genuine Honeywell component identified by the alternate part number CC-SCMB02, the Honeywell 51199942-300 ensures that the C300 controller maintains its program logic, configuration settings, and real-time clock functions even when primary power is lost or interrupted. This battery is not a general-purpose replacement but a purpose-built assembly designed to seamlessly integrate into the C300 DCS architecture.
In the operational context of a Honeywell C300 distributed control system, the 51199942-300 functions as the memory backup power source. The C300 controller relies on volatile memory to store its running configuration and control strategies. Without a functioning backup battery, a power failure would result in the loss of this critical data, requiring a complete system reload and potentially causing extended process downtime. The Honeywell 51199942-300 prevents this scenario by providing a reliable, long-life power source that maintains memory contents and clock functions during outages. This is particularly vital in continuous process industries where even brief interruptions can have significant safety and financial consequences.
As a component within Honeywell’s comprehensive C300 ecosystem, the 51199942-300 is positioned as a consumable maintenance item with a defined service life. Like all battery technologies, it degrades over time and requires periodic replacement to ensure continued protection. The Honeywell 51199942-300 is therefore an essential spare part for facilities operating C300 systems, enabling proactive maintenance that preserves system reliability without the cost and disruption of controller replacement. Its design emphasizes long-term stability and compatibility with the specific voltage and charging characteristics of the C300 platform.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 51199942-300 |
| Alternate Part Number | CC-SCMB02 |
| Manufacturer | Honeywell |
| Product Type | System Backup Battery Assembly |
| Compatible System | Honeywell C300 Control System |
| Battery Chemistry | Lithium-Ion |
| Nominal Voltage | 3.6 V DC |
| Capacity | 2.2 Ah |
| Operating Temperature Range | -40°C to +60°C |
| Dimensions | 114 mm x 76 mm x 30 mm |
| Weight | Approximately 0.23 kg |
| Connection Type | Terminal Block |
| Certifications | UL, CE |
| Enclosure Material | Polycarbonate |
Main Features and Advantages
Dedicated C300 Compatibility and Integration: The Honeywell 51199942-300 is engineered as a direct-fit battery solution for the C300 control system, with terminal block connections that facilitate straightforward installation without modification. Unlike generic batteries that may require adapters or wiring changes, the 51199942-300 is dimensioned and rated specifically for the C300’s power architecture, ensuring proper charge voltage and discharge characteristics. This dedicated compatibility eliminates the risk of over-voltage or under-voltage conditions that could damage sensitive controller electronics, providing peace of mind that the backup power source will function correctly when called upon.
Lithium-Ion Chemistry for Extended Service Life: The Honeywell 51199942-300 utilizes lithium-ion battery chemistry, which offers significant advantages over traditional lead-acid or nickel-based batteries in backup applications. Lithium-ion technology provides higher energy density, lower self-discharge rates, and superior cycle life, meaning the 51199942-300 can maintain its charge over longer periods between maintenance cycles. This translates directly into fewer battery replacements over the C300 system’s operational lifetime, reducing both material costs and maintenance labor. The lithium-ion chemistry also performs better in variable temperature environments, maintaining capacity more consistently than lead-acid alternatives.
Wide Operating Temperature Tolerance: Industrial control cabinets are not always located in climate-controlled environments. The Honeywell 51199942-300 is designed to operate across a temperature range from -40°C to +60°C, making it suitable for installation in a broad spectrum of industrial settings. Whether the C300 system is deployed in a temperature-controlled control room or a remote equipment shelter subject to seasonal extremes, the 51199942-300 maintains its backup capability. This thermal resilience ensures that critical memory retention is preserved regardless of ambient conditions, contributing to overall system reliability in diverse operating environments.
Compact and Lightweight Construction: The 51199942-300 is housed in a compact polycarbonate enclosure measuring approximately 114 x 76 x 30 mm and weighing only 0.23 kg. This small form factor simplifies integration into the C300 system’s battery compartment or designated mounting location, and makes handling during replacement a straightforward task. The lightweight design also reduces shipping costs and simplifies inventory management for facilities stocking spare batteries. Despite its compact size, the 51199942-300 delivers the capacity required to sustain C300 memory functions through typical power outage durations.
Reliable Terminal Block Connection: The 51199942-300 features a standard terminal block connection interface, ensuring secure and stable electrical contact with the C300 system’s battery input. This connection method is resistant to vibration-induced loosening that can occur with push-on connectors, providing confidence that the battery will remain reliably connected throughout its service life. The terminal block design also simplifies replacement procedures, as technicians can disconnect and reconnect the battery without specialized tools or training.
