MBX21 Xenon Strobe Beacon 21 Joule

  • Very large termination area.
  • Stainless Steel dome guard as standard
  • Xenon tube mechanically secured against vibration/shock.
  • Automatic synchronised flash, or Flip-Flop alternating mode.
  • Continuously rated.
  • Stainless steel fixings.
  • Ratchet adjustable stainless steel ‘U’ bracket for 360° positioning.
  • Duplicate cable terminations (in & out for daisy-chain installations).
  • Tropicalised as standard.


MBX21 Xenon Strobe Beacon 21 Joule

MBX21 Xenon Strobe Beacon 21 Joule

The MBX21 is a 21 Joule Xenon strobe beacon featuring a robust, fire retardant, IP66 & IP67 enclosure.

Manufactured from lightweight, high performance PPS with its corrosion proof properties the MBX21 is suitable for the harshest of environments.


Energy: 21 Joules
Flash rate: 1Hz, 2Hz & double strike 1Hz
Peak Candela: 2,100,000 cd - calculated from energy (J)
Effective Intensity cd: 1,050 cd - calculated from energy (J)
Peak Candela: 118,537 cd* - measured ref. to I.E.S.
Effective Intensity cd: 520 cd* - measured ref. to I.E.S.
Lens colours: Amber, Blue, Clear, Green, Magenta, Red & Yellow
Voltages DC: 24vdc; 48vdc
Voltages AC: 115vac; 230vac
Ingress protection: IP66/67
Housing material: UL94V0 PPS
Cable entries: 2 x M20 ISO cable gland entries -
with 1 blanking plug.
Terminals: 0.5 to 4.0mm² - In & Out
Weight: 1.48kg/3.25Ibs
* All candela data is representative of performance with clear lens at optimum voltage.

Current Consumption

Version: Voltage: Current:
24V dc 20-28V dc 1.2A
48V dc 42-54V dc 600mA
115V ac 50/60Hz +/-10% 560mA
230V ac 50/60Hz +/-10% 280mA

Part Codes

Part Code: Ident.: Description:
Product type: MBX21 Xenon Strobe Beacon
Voltage: AC115
115V ac 50/60Hz
230V ac 50/60Hz
24V dc (20-28Vdc)
48V dc (42-54V dc)
Cable entries: [e] A
M20x1.5 & ½” NPT
M20x1.5 & M20x1.5
½” NPT & ½” NPT
Stopping plug material: [m] N Nylon
Bracket & Guard: [s] 1
304 (A2) Stainless Steel
316 (A4) Stainless Steel
Version: [v] A1 CE
Enclosure: [x] B Black
Lens colour: [y] A, B, C
G, M, R
Amber, Blue, Clear
Green, Magenta, Red
e.g: MBX21DC024BN1A1B/R MBX21 Xenon Beacon in 24Vdc with dual M20 entries,
nylon stopping plug
Black enclosure with Red lens
NOTE: The MBX21 supersedes the MB021P, maintaining compatibility with existing installations.

Flash Patterns

Pattern: Type: Stg 2 (DC)
SF Single flash - 1Hz (both flash tubes operate together) AF
AF Alternate flash - 2Hz (tubes flash alternately - 0.5sec gap) SF
DF Double strike flash - 1Hz (first tube flash followed by second) SF

Effective Candela lens colour factor

Amber Blue Clear Green Red Yellow
0.51 0.12 1.00 0.49 0.15 0.86