Rittal 7338321 DK DET-AC III Slave - NOVEC 1230
Part Number: 7338321
Manufacturer
Rittal
Part number
7338321
Category
Alt Part Number
DK 7338.321
Quick Summary
The DK DET-AC III Slave adds extinguishing supply for bayed enclosures in IT cabinets. It eliminates manual coordination of multiple extinguishing units and reduces downtime during bay expansions. The system aligns with ETIM EC002685 and ECLASS 8.0 40040104 classifications, while using eco-friendly NOVEC 1230. This approach delivers safer response times, easier maintenance, and scalable protection as you grow. For procurement, the single-unit package simplifies stocking and supports fast retrofit in existing racks. Engineers benefit from clear wiring diagrams, reliable detection via DET-AC III Master, and local alarms through 4x/3x relay outputs. It also supports a streamlined supply chain with a compact, low-footprint design that minimizes installation effort in restricted spaces.
Product Information
Extended Description
7338321 Rittal: DK DET-AC III slave, Add-on unit to the DET AC III Master, Extinguishing agent supply for each bayed enclosure, Detection and activation occurs via the DET-AC III master system, Communication Master-Slave via CAN bus interface
Article number
DK 7338.321
Product description
This add-on unit to the DET AC III Master includes an additional extinguisher unit. In addition to the DET-AC III unit, a DET-AC III slave unit is used for each additional bayed enclosure and supplies the extinguishing agent for that enclosure. Detection occurs via the DET-AC III master system, even when multiple enclosures are bayed together. If a main alarm is reported, the DET-AC III Master will activate extinguishing in all systems simultaneously.
Benefits
Innovative extinguisher NOVEC™ 1230: eco-friendly, non-critical for IT components, non-conductive
Technical specifications
Extinguisher is emitted via a propellant cartridge, with integral electrical activation unit
Material
Sheet steel
Colour
Enclosure: RAL 7035 | Front: RAL 9005
Extinguisher gas
Type: Novec™ 1230 | Fill volume: 1.8 l
Tank
Material: Aluminium | Volume: 2 l
Interfaces
4 x/3 x relay outputs for alarms and faults (terminals/RJ12 jacks)
Uninterruptible mains electricity operation
approx. 4 h
Note
This system is designed solely for use in closed, non-accessible enclosure systems with a maximum volume of 2.8 m³.
Dimensions
Width: 482.6 mm | Height: 44 mm | Depth: 660 mm
Operating temperature range
10 °C...40 °C
Storage temperature range
-20 °C...65 °C
Storage temperature range of batteries
-15 °C...40 °C
Relative humidity (non-condensing)
96 %
Rated operating voltage
24 V (DC)
Packs of
1 pc(s).
Weight/pack
19.1 kg
PCF per pack (cradle-to-gate)
72.8 kg CO2 eq (Cat B)
Note on PCF category
Category B: PCF value (cradle-to-gate) based on the product weight, approximately calculated and self-declared
Customs tariff number
84248970
EAN
4028177699335
ETIM 9
EC002685
ECLASS 8.0
40040104
Product description
DK DET-AC III slave, Add-on unit to the DET AC III Master, Extinguishing agent supply for each bayed enclosure, Detection and activation occurs via the DET-AC III master system, Communication Master-Slave via CAN bus interface
Feature → Business Impact → Application: Extinguishing agent NOVEC 1230 is eco-friendly, non-conductive and suitable for sensitive IT components, reducing environmental risk while preserving critical hardware. This translates to lower total cost of ownership and safer operation within bayed enclosures. Application: ideal for multi-bay IT cabinets where reliable, non-damaging suppression is required without compromising electronics. Feature → Master-slave CAN bus communication between the DET-AC III Master and slaves provides synchronized detection and activation across bays, cutting response times and ensuring uniform protection. Application: scalable racks and enclosures where a single master coordinates multiple extinguishers. Feature → Per-bay extinguishing supply with a 2 L tank and 1.8 L NOVEC 1230 fill ensures consistent agent delivery; the system is designed for closed enclosures up to 2.8 m³. Application: data centers and machine rooms needing modular, bay-specific protection. Feature → Four relay outputs for alarms and faults enable integrated monitoring and remote notification, reducing mean time to repair and simplifying compliance reporting. Application: IT rooms with centralized BMS integration and proactive fault management. Feature → Robust construction in sheet steel with color-coded components and a compact footprint supports easier installation and long-term reliability. Application: retrofit into existing Rittal enclosures with minimal disruption. Feature → 24 V DC operation and a 4 h uninterruptible operation capability provide resilience against power fluctuations and short-term outages. Application: critical control cabinets requiring continuous protection during mains instability. Note on PCF: Cradle-to-gate PCF of 72.8 kg CO2 eq per pack (Category B) demonstrates the product’s environmental footprint considerations, relevant for sustainability reporting and procurement audits.
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FAQs
The DK DET-AC III Slave mounts alongside bayed enclosures and connects to the DET-AC III Master via the CAN bus interface. It uses 24 V DC power and interfaces with alarms and faults through 4x/3x relay outputs. Ensure enclosure volume remains within the 2.8 m³ limit, and verify a proper electrical grounding and clear communication cabling to prevent false activations.
Key specs include NOVEC 1230 extinguishing gas with a 1.8 L fill, a 2 L tank, dimensions 482.6 mm width, 44 mm height, 660 mm depth, 24 V DC operation, and CAN bus Master-Slave communication. The unit supports up to four alarms/fault signals via relays and provides up to four hours of uninterruptible operation.
Yes. It is designed for closed, non-accessible bayed enclosures with a maximum volume of 2.8 m³, offering automatic discharge coordinated by the DET-AC III Master. The NOVEC 1230 gas is non-conductive and environmentally friendly, protecting sensitive IT components without electrical interference.
Absolutely. The DET-AC III Slave communicates with the Master via CAN bus and provides four relay outputs for alarms and faults. This enables centralized monitoring, easier integration with building management systems, and faster fault diagnosis across multiple bays.
The system reduces downtime by enabling automatic, coordinated discharge across bays, lowering maintenance interventions. With eco-friendly NOVEC 1230 gas and a robust 24 V DC architecture, ongoing costs are minimized. PCF and environmental data support sustainability reporting and procurement evaluations.