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GNExB2LD2 Explosion Proof LED Multifunction Beacon 1-21-054

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The GNExB2LD2 is an IECEx & ATEX approved explosion proof high output LED multi-function beacon. The robust IP66 corrosion proof GRP enclosure and extended temperature range ensures suitability for all Zone 1, 2, 21 & 22 hazardous location applications.
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Explosion Proof LED Multifunction Beacon


The GNExB2LD2 utilises an array of high power Cree® LED’s, orientated to optimise visibility in any direction. The beacon can be configured as a steady beacon with a light output of up to 174 candela. Alternatively, for warning applications, five flashing modes, with a light output of up to 338 candela. DC voltage versions feature three remotely selectable stages enabling multiple warnings to be signalled. The field replaceable colour filter enhances the light output and is constructed from UV stable PC. SIL1 compliant to IEC61508 (2010) as standard.


Datasheet Datasheet.pdf
Installation Manual D156-00-401-IS_Issue_2_GNExB2LD2.pdf
INMETRO Installation Manual D156-00-401-IS-IEx_Issue_A.pdf
IECEx certificate IECEx_ULD_15.0003X_Issue_2_GNExB.pdf
ATEX certificate DEMKO_15ATEX1448X_Issue_3_GNExB.pdf
INMETRO certificate CoC_IEx_20.0049X_Rev_0_GNExB..._GNExJ2.pdf
Ex EAC TR CU 012/2011 Certificate RU_-GB.65..01252_21.pdf
CCOE PESO CCOE_P452946_GNExB1_2.pdf
ECAS Ex Approval ECAS_21-07-16789-E21-07-035371-NB0007_GNExB.pdf
Declaration of Conformity DC-037_Issue_G_GNExB__GNExJ.pdf
SIL1 Certificate T900-123_Beacons_SIL1.pdf
2D drawing (PDF) SK0417_Issue_A.pdf
2D drawing (DWG) SK0417_Issue_A.DWG
3D drawing (IGS) SK0417-3D_Issue_A.IGS
3D drawing (STEP) SK0417-3D_Issue_A.STEP
Wiring Schematic D156-06-401_Issue_B__GNExB2LD2_.pdf
Lo-res product image 1 (JPG) 1-21-054_GNEXB2LD2-R.jpg
Lo-res product image 2 (JPG) 1-21-054_GNEXB2LD2-G.jpg
Lo-res product image 3 (JPG) 1-2x-xxx_GNEX-GROUP_4.jpg
Pipe Mount Drawing (PDF) D217-05-231_Issue_B_GNExB2.pdf


  • Robust, corrosion proof GRP (glass reinforced polyester) enclosure
  • Ingress protection IP66
  • Automatic synchronisation on multi-beacon systems
  • Choice of five flash rates: 1Hz, 1.5Hz, 2Hz, double and triple flash.
  • High and low power Steady modes
  • Three remotely selectable stages/channels on DC versions.
  • Glass lens & Stainless Steel guard
  • UV stable PC field replaceable lens colour filter
  • Stainless steel fixings
  • Triple cable entries
  • Duplicate cable terminations
    (in & out for daisy-chain installations)
  • SIL1 compliant to IEC61508 (2010)


Source: Array of 4 x High Power Cree® LED’s
Modes: 1Hz flash (60 fpm)
1.5Hz flash (90 fpm)
2Hz flash (120 fpm)
Double strike flash
Triple strike flash
High Power Steady
Low Power Steady
Eff. Intensity cd: 174 cd – High Power Steady
Eff. Intensity cd: 338 cd – 1Hz flash
Lens colours: Amber, Blue, Clear, Green, Magenta, Red & Yellow
Voltages DC: 24vdc
Voltages AC: 115Vac; 230Vac
Ingress protection: IP66/67
Enclosure matl: UV stable GRP (glass reinforced polyester)
Colour: Natural Red – can be provided in alternative colours
Cable entries: 3 x M20 ISO (2 stopping plugs inc.)
Adaptors to M25, 1/2" & 3/4" NPT can be specified
Terminals: 0.5 to 2.5mm²
Enclosure volume: <2 litres
Line monitoring: Blocking diode included
EOL Min. 500 Ohm 2w, or 3k3 Ohm 0.5w resistor
or diode (DC versions) can be fitted
LED life: 60,000 Hours
Temperature range: -50° to +70°C (-58°F to +158°F)
Relative humidity: 95% – Additional tropicalisation is recommended for applications where both high relative humidity and high ambient temperatures exist
Weight: 3.5kg/7.7lbs
*All candela data is representative of performance with clear lens at optimum voltage.
Accessories: SP65-0001-A2 Pole Mount Bracket Kit 2" St/St A2
SP65-0001-A4 Pole Mount Bracket Kit 2" St/St A4
SP65-0003-A2 Sunshade – St/St A2 (304)
SP65-0003-A4 Sunshade – St/St A4 (316)

Current Consumption

Version: In Rush: Voltage: Steady High Power: Steady Low Power: Flashing 1Hz:
24V dc 1.89A 0.22ms 18-54V dc 240mA 134mA 110mA
115V ac 1.15A 12ms 103.5-126.5V ac 50/60Hz 95mA 78mA 90mA
230V ac 0.67A 12ms 207-253V ac 50/60Hz 48mA 37mA 45mA

Part Codes

Version: Part code:
Product type: GNExB2
Type: LD2 LED Multifunction Beacon
Voltage: DC024
18-54V dc
103.5-126.5V ac
207-253V ac
Cable Entry Type:[e] A
3 x M20x1.5mm
2 × 1/2" NPT – adaptors
2 × 3/4" NPT – adaptors
2 x M25x1.5mm – adaptors
1 × 1/2" NPT – adaptor
1 × 3/4" NPT – adaptor
1 x M25x1.5mm – adaptor
3 × 1/2" NPT – adaptors
3 × 3/4" NPT – adaptors
3 x M25x1.5mm – adaptors
plug material: [m]
Brass (standard)
Nickel Plated
Stainless Steel
Guard material & tag: [s] 1
A2 304 Stainless Steel
A4 316 Stainless Steel
A2 304 St/St with Equip. Tag
A4 316 St/St with Equip. Tag
Product version: [v] A1 IECEx & ATEX Group II 2G/D Zone 1, 2, 21 & 22
Enclosure colour: [x] R
Special (contact E2S)
Lens colour: [y] A, B, C, G
M, R, Y
Amber, Blue, Clear, Green
Magenta, Red, Yellow


  • IECEx UL 15.0003X
  • TR-CU Ex EAC certificate: RU С-GB.НА65.В.01252_21
  • PESO CCOE certified: P452946
  • INMETRO IEx 20.0049X


The GNExB2LD2 is available as a plated assembly configured with up to 4 x Xenon strobe or LED beacons with a GNExJ2 Ex d junction box or 5 x beacons without a junction box. Contact E2S for further information.


  • II 2G Ex db IIC Gb T6 Ta -50°C to +65°C
  • II 2G Ex db IIC Gb T5 Ta -50°C to +70°C
  • II 2D Ex tb IIIC Db T85°C Ta -50°C to +70°C

Multi-function patterns

Stage 1:
[On board]
Stage 2:
Stage 3:
Steady High Power Flashing 1Hz Triple Strike
Steady Low Power Flashing 1Hz Triple Strike
Flashing 1Hz 2x Flash 2Hz Triple Strike
Flashing 1.5Hz Flashing 2Hz Double Strike
Flashing 2Hz Triple Strike Triple Strike
Double Strike Steady High Power Triple Strike
Triple Strike Flashing 2Hz Double Strike
Note: Remote second and third stage on DC units only
Double strike: 150ms on, 150ms off x 2, 600ms off
Triple strike: 150ms on, 150ms off x 3, 600ms off

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