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WMHS-III
Industrial Telephone with HandsetExplore WMHS-III →All 83 models →
Cement Steel & Metals Power Pharma & Clean Rooms Fertiliser & Chemicals Ports & Highways Rail & Metro Mining
SMARTMCS-III

Industrial PA System, Central Amplifier

Central-amplifier PA exchange driving 12 loudspeaker zones on 100 V lines

112 ports max12 zones100 V line250 W amplifiers
Datasheet · PDF 2.2 MB

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Environment
Indoor · Outdoor
Interface
Analogue

Ideal for

  • Cement plants
  • Steel plants
  • Power generation facilities
  • Mines
  • Large and medium-scale industrial units

What it does

For plants that want line-powered phones in the field and the amplifiers in one rack. The 100% non-blocking MCS-III links SMART industrial telephones with PAGE and TALKBACK buttons, and switches 250 W paging amplifiers onto up to 12 loudspeaker lines. Field posts need no power; the amplifiers stay off until someone pages.

  1. 01

    24 telephone ports, expandable to 112

  2. 02

    Up to 12 loudspeaker zones with direct zone buttons on the console

  3. 03

    One-button all-page and talkback from any field telephone

  4. 04

    100 V line loudspeakers for long runs; no pre-amplifiers

  5. 05

    Field telephones run on line voltage: no power at the post

  6. 06

    Up to 4 operator consoles; patches into the plant EPABX

Specifications

Electrical · 6
Power supply220/110 V AC
Telephone line40 V
Power consumption< 100 W
Insulation600 V for 3 min between power source & telephone line
Ringer voltage50 V AC (100 V PP)
UPS loadMCS 24 ports 160 VA (RMS) / peak 240 VA; operator console 20 VA / peak 25 VA; EXA PA 250 320 VA / peak 450 VA
Mechanical · 4
DimensionsRack mounted
Weight8.5 kg
Housing16-gauge powder-coated steel body
Central rackMCS-III + paging amplifier modules EXA PA 250 + loudspeaker page controller unit PCU
Environmental · 2
Moisture resistance0 to 95% humidity with PCB conformal coated
Temperature0 to +60 °C
Connectivity · 3
DiallingTone
Cabling0.5 mm 1-pair telephone cable MCS to each location; 0.5 mm 2-pair cable to operator console; 0.75 mm 2-core flexible cable from amplifiers to horns
Field unitsSMART industrial telephones WMHS-IIIPT / WMHF-IIIPT
Operation · 4
Architecture100% non-blocking, TDM/PCM
PortsMinimum 24 industrial telephone ports, expandable up to 112; 16-line telephone cards
ZonesUp to 12 loudspeaker lines
Operator consolesUp to 4 (DTHS-III)

Compare with similar models

Differences first: interface, power, protection and output, then installation. Full specifications are in each model's table.

Comparison of MCS-III with similar models. Rows that differ come first; “Not specified” means the datasheet does not list it.
SpecificationMCS-III
Industrial PA System, Central Amplifier
MCS-II
Industrial PA System, Distributed Amplifier
ISAS
Industrial Safety Announcement System (PAGA)
MINI MCS-II
Compact Industrial PA System
InterfacediffersAnalogueAnalogueStand-aloneAnalogue
Power supplydiffers220/110 V AC220 V / 110 V ACNot specified220 V / 110 V AC
Power consumptiondiffers< 100 W< 100 WNot specified< 35 W
UPS loaddiffersMCS 24 ports 160 VA (RMS) / peak 240 VA; operator console 20 VA / peak 25 VA; EXA PA 250 320 VA / peak 450 VAMCS 24 ports 50 VA (RMS) / peak 90 VA; MCS 112 ports 130 VA (RMS) / peak 220 VA; PA telephone 30 VA / peak 55 VA; operator console 20 VA / peak 45 VANot specifiedNot specified
EnvironmentdiffersIndoor, OutdoorIndoor, OutdoorIndoor, OutdoorIndoor
Cablingdiffers0.5 mm 1-pair telephone cable MCS to each location; 0.5 mm 2-pair cable to operator console; 0.75 mm 2-core flexible cable from amplifiers to horns0.5 mm 2-core twisted telephone cable MCS to each location; 1.5 sq mm 3-core power cable; 0.75 mm 2-core flexible cable to loudspeaker horns2-core 0.75 mm flexible armoured cable amplifier to LMT; 1.5 sq mm 3-core power cable to rack; signal cable for desk station supplied with equipmentNot specified
PortsdiffersMinimum 24 industrial telephone ports, expandable up to 112; 16-line telephone cardsMinimum 24; expandable up to 112 PA telephone ports; installation in multiples of 16Not specifiedMaximum 32
DimensionsdiffersRack mounted320 × 380 × 200 mmNot specifiedNot specified
Field unitsdiffersSMART industrial telephones WMHS-IIIPT / WMHF-IIIPTSMART PA telephones WMHS-II, WMHF-IINot specifiedNot specified
Architecturediffers100% non-blocking, TDM/PCM100% non-blocking TDM/PCMNot specifiedNot specified
ZonesdiffersUp to 12 loudspeaker linesUp to 12 predefined zones; up to 12 PA telephones per zoneNot specifiedNot specified
Operator consolesdiffersUp to 4 (DTHS-III)Up to 4 (DTHS-II)Not specifiedNot specified

Part of a system

Plant PA system

Paging and private talk across a whole plant, in two architectures. MCS-II puts a 30 W amplifier in every PA telephone and needs no amplifier rack; MCS-III keeps line-powered phones in the field and drives 100 V loudspeaker lines from central 250 W amplifiers.

How the system works

Downloads

PDFSMART MCS-III datasheet2.2 MB

Questions

MCS-II or MCS-III?

MCS-II puts a 30 W amplifier in every PA telephone and needs no amplifier rack. MCS-III keeps line-powered phones in the field and drives 100 V loudspeaker lines from central 250 W amplifiers in up to 12 zones.

Can I mix in PA telephones?

Yes. SMART PA telephones can also be installed on the MCS-III for distributed-amplifier features.

Related models

All plant communication (pa) systems →
EXA PA 250

Paging Amplifier Module, 250 W

250 W rack amplifier module on 100 V lines for MCS-III, ISAS

250 W RMS100 V line19 in rack

Need MCS-III for a project?

Tell us the quantity, the plant and the timeline. We reply with a quotation.

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