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Brand: Kentec
Kentec Sigma XT+ K21042M3 4-Zone 2-Area Extinguishant Panel
Description
The Kentec Sigma XT+ K21042M3 is a conventional multi-area extinguishant control panel with four detection zones and two extinguishant areas in a 385 x 520 x 110 mm enclosure. Kentec describes the Sigma XT+ range as complying with EN12094-1, EN54-2 and EN54-4, and offers it with two, four or eight detection zones and one to four extinguishant areas. This page is a technical summary of the datasheet DS50 for buyers who need to confirm the model code before requesting a quotation.
Product overview
Each extinguishant area on this panel carries its own inputs and outputs and is programmed through a simple interface. An area has a seconds countdown display, a mode selector with manual release, a pair of extinguishant outputs that may be assigned as main and reserve, and sounder outputs for the first and second alarm stages. Relay contacts per area report first stage, second stage, released and fault states. Stand-alone extinguishant units are also listed in the datasheet, with two monitored inputs to receive initiating signals from remote fire detection control panels or addressable modules.
What the datasheet highlights
- Certified by the manufacturer to EN12094-1, EN54-2 and EN54-4.
- Choice of 2, 4 or 8 conventional zones, with 1 to 4 areas.
- Delay and output duration are both programmable.
- Remote inputs for hold, manual release, door interlock mode select, released and low pressure switches, plus an abort input, all monitored.
- RS485 link for Sigma Si indicators and ancillary boards, wired with a simple 4 core cable.
- Room for up to seven Sigma CP ancillary boards (K580) or sounder boards (K461) on that bus.
Technical specification
Product codes in the range, as listed in DS50:
| Product code | Zones | Areas | Size (mm) |
|---|---|---|---|
| K21021M3 | 2 | 1 | 385 x 520 x 110 (M3) |
| K21041M3 | 4 | 1 | 385 x 520 x 110 (M3) |
| K21042M3 | 4 | 2 | 385 x 520 x 110 (M3) |
| K21081M3 | 8 | 1 | 385 x 520 x 110 (M3) |
| K21082M3 | 8 | 2 | 385 x 520 x 110 (M3) |
| K21083M4 | 8 | 3 | 385 x 700 x 145 (M4) |
| K21084M4 | 8 | 4 | 385 x 700 x 145 (M4) |
General and electrical data:
| Parameter | Specification |
|---|---|
| Enclosure | Mild steel sheet 1.2 mm thick with epoxy powder finish; rated IP30; standard panel weighs 8 kg |
| Mains supply | 230 V AC, 50 Hz, +10 percent / -15 percent; 100 W maximum; fuse 1.6 A |
| Power supply rating, 1 and 2 area units | 3 A total including battery charge, 28 V +/- 2 V |
| Power supply rating, 3 and 4 area units | 5.25 A including battery charge, 28 V +/- 2 V |
| Battery charge | 27.6 V DC nominal, temperature compensated; 0.7 A maximum; fuse 20 mm 3.15 A |
| Mains fail current | 54 mA per module |
| Maximum battery current | 3 A (K21021, K21041, K21042, K21081, K21082); 4 A (K21083, K21084) |
| Auxiliary 24 V output | Sigma XT+ module: 500 mA electronic fuse, one per area |
| 1st and 2nd stage sounder outputs | 21 to 28 V DC, fused at 1 A with electronic fuse |
| Relay contacts | 5 to 30 V DC, 1 A maximum, for each of fault, fire, local fire, first stage, second stage and extract |
| Detection circuit | Zone quiescent current 0 to 2 mA; end of line 6K8 5 percent 1/2 W; typically 20 detectors per zone |
| Release output | 21 to 28 V DC, fused at 1 A; delay 0 to 60 s (+/- 10 percent); duration 60 to 300 s |
| Cabling | FP200 or equivalent; maximum capacitance 1 uF, maximum inductance 1 mH |
| Status unit link | Two-wire RS485; status unit supply 21 to 28 V DC, 500 mA electronic fuse |
Reading the product code
The product code encodes the configuration, so confirm the number of zones and areas before ordering. K21042M3 gives four zones and two areas in the smaller M3 enclosure. If the project needs three or four areas, the datasheet lists the larger M4 enclosure with a 5.25 A supply. Companion Sigma Si status units are specified in datasheet DS41, and the XT+ datasheet points to DS39 and DS48 for the repeater and sounder boards that share the serial bus.
Installation notes
Cabling for detection circuits is specified as FP200 or equivalent, and terminals accept 0.5 mm2 to 2.5 mm2 solid or stranded wire. Detection zone thresholds are printed in the datasheet, including the allowable end of line range of 10K to 2K ohm, a detector alarm threshold of 1K to 390 ohm and a short circuit threshold of 130 to 0 ohm. The 52-page manual Man-1112 covers installation and operation and should be read by the commissioning engineer.
Typical applications
The two-area, four-zone arrangement suits plant rooms, electrical switch rooms, data halls or archives where two separate gaseous extinguishant hazards are protected from one panel with conventional detectors and call points. Final system design, cylinder selection and approvals remain the responsibility of the system designer.
Selection and installation notes
A fire alarm control panel is selected from the number of loops or zones, the devices to be connected, the standby battery duration and the standard the project requires. It must be designed, installed, programmed and commissioned by competent fire system engineers to the code and authority rules for the project, with a cause and effect plan, correct battery sizing, cable of the specified type and a full test of every device and output before handover. Confirm the certification needed for the project with the authority before purchase.
Information needed for a quotation
Send the full model code, the quantity, the delivery location in Oman or the GCC, the intended use and any accessories needed, so that the complete package can be quoted together.
Documents and supply information
The manufacturer data sheet is attached to this page and should be read together with the project specification and the site risk assessment before a purchase is confirmed. Ratings, standards and dimensions are quoted as printed on that sheet. Lead time, stock position and certificates available with the shipment are confirmed in the quotation, and we supply to Oman and the wider GCC region for industrial, utility and building services projects.
Documents and quotation
Open the PDFs on this page to compare the codes in detail. Seven Star LLC is an independent supplier in Muscat. Similar equipment is collected in the fire alarm panels in the Logic Controllers category; for pricing, send us the exact K-code and quantity.
Frequently asked questions
Which standards does the Sigma XT+ list?
The datasheet states approval to EN12094-1, EN54-2 and EN54-4.
What does K21042M3 mean in terms of zones and areas?
Per the DS50 table, K21042M3 has four detection zones and two extinguishant areas.
How long can the release delay be set?
The datasheet gives an adjustable extinguishant release delay of 0 to 60 seconds (+/- 10 percent) and a release duration of 60 to 300 seconds.
How many status units can be connected?
Each extinguishant area can have up to seven serially connected Sigma Si status units or ancillary relay boards.
Is a stand-alone version available?
Yes. DS50 lists stand-alone extinguishant control units with two monitored inputs for initiating signals from other panels or addressable modules.
Datasheets & Documents
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About brand
Kentec Electronics is a UK manufacturer of fire detection and extinguishing control panels, founded in 1985, based in Dartford and today a wholly-owned subsidiary of the Hochiki Corporation of Japan.
Seven Star LLC is an independent supplier in Muscat. We list Kentec panels with the manufacturer datasheet and manual on each page, for fire alarm contractors and facilities in Oman and the GCC.
Kentec product series
Fire alarm panels include the Syncro AS two-loop addressable panel, the Syncro ASM marine version, the Sigma CP four-zone conventional panel with the Sigma CP-R repeater, and the UL864 listed Sigma A-CP conventional panel.
Extinguishant control panels include the Sigma XT+ four-zone two-area panel, the Syncro XT+, the single-area Sigma ZXT and the UL/FM Sigma A-XT releasing panel, and the Sigma Si is a six-lamp extinguishant status unit for doors of protected rooms. Datasheets state the standards by model, such as EN 54-2, EN 54-4, EN 12094-1 and UL864.
Where Kentec panels are used
Fire alarm systems in commercial and industrial buildings, and gas suppression release for server rooms, control rooms, switchgear rooms and archives, as well as marine installations.
Ordering Kentec panels: what we need
Send the Kentec part number, the number of loops or zones, the detector protocol for addressable panels, the extinguishing agent and number of areas for release panels, and the standard (EN or UL) required.
Browse Kentec products by category: Logic Controllers.
Related products
Frequently Asked Questions
Which standards does the Sigma XT+ list?
The datasheet states approval to EN12094-1, EN54-2 and EN54-4.
What does K21042M3 mean in terms of zones and areas?
Per the DS50 table, K21042M3 has four detection zones and two extinguishant areas.
How long can the release delay be set?
The datasheet gives an adjustable extinguishant release delay of 0 to 60 seconds (+/- 10 percent) and a release duration of 60 to 300 seconds.
How many status units can be connected?
Each extinguishant area can have up to seven serially connected Sigma Si status units or ancillary relay boards.
Is a stand-alone version available?
Yes. DS50 lists stand-alone extinguishant control units with two monitored inputs for initiating signals from other panels or addressable modules.
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