BR4
Art. No. see table
Description:
The BR4 is a round powerfull led fixture, using the latest led technology.
The BR4 uses a patented technology, PORIFERA for optimized heat dissipation. This technology uses aluminium
foam to conduct heat from the LEDs. The foam has an extremely high surface aspect ratio and is
very compact. Moreover, TAL has developed its own PCB (printed circuit board) for the B4. The result is
an elegant LED device with a long operating lifetime warranty of 5 years.
The integrated focus rings allow you to adjust the light to suit your needs.
The B4 is very installation friendly: it can be inserted into round cutouts, or used trimless in a
Frame.
B4 can be powder coated in black or white, and is available with LEDs in warm white and cold white.
The user can also choose between a wide or a narrow beam angle.
The simple beauty of B4, in combination with the unseen power of the LEDs, makes it a unique fixture; a
precursor which heralds the beginning of a new generation of LED instruments.
Electrical data:
Lamp type:
Lamps:
Lampholders:
Control gear:
Input supply voltage:
Connector block:
Glow wire resistance:
IP rating:
Powerled CREE
4X3W
N/A
not included
350-700mA
2x2,5mm² with strain relief
960°C
IP20
Protection classification:
Mounting surface classification:
Approvals:
Materials and finish
Fixture is made in aluminium alloy with textured white powdercoat finish.
Reflectors: High reflective aluminium reflectors
Installation and lamp replacement:
The unit is installed by means of two leaf springs or 2 torsion springs for hollow or solid materials.
Technical data
Cut-out:
Installation height:
Luminaire dimensions:
Weight:
Adjustability:
Accessories:
Round hole diameter 95mm
105 mm (incl. Terminal block holder)
Diameter 121
0,5 kg
N/A
Overview of codenumbers
TAL NV - INFO@TAL.BE
JOOS DE TER BEERSTLAAN 33, 8740 PITTEM, BELGIUM
T. 0032 51/46.43.41 – F. 0032 51/46.43.42 – WWW.TAL.BE
LEAF Springs
3000K
TORSION Springs
6250K
3000K
6250K
10°
40°
10°
40°
10°
40°
10°
40°
Textured White
236027
236127
236017
236117
237027
237127
237017
237117
Textured Black
236026
236126
236016
236116
237026
237126
237016
237116
Textured White + Chrome Focus
236020
236120
236010
236110
237020
237120
237010
237110
Textured White + Double Chrome
236021
236121
236011
236111
237021
237121
237011
237111
Porifera
Porifera is a unique system for cooling powerleds and other electronic components through aluminium foam. The unique
properties of this aluminium foam allow for a much higher cooling performance compared to conventional cooling bodies. LED
light fixtures that make use of Porifera technology have greater efficiency, made possible through the following characteristics :
-
-
Large cooling surface : the foam has an extremely high surface aspect ratio thus creating a large surface within a small
volume. The larger the cooling surface, the more heat can be dissipated.
Low mass per volume : the aluminium foam is very thin which brings the great advantage that the heat is transferred
immediately to the environment (air) and is not first stored in the material itself like in conventional systems. Such
traditional systems have a radiator effect i.e. the material fully heats up and only then interacts with its environment. So
the thicker the material, the slower it cools down. The low mass per volume of Porifera results in a low heat capacity. It
reacts almost instantly to temperature changes which results in very short transient regimes, making it a very
controllable heat exchanger.
Porous : the open cell structure allows for a free flow of air through the mazes of the foam thus securing an optimal heat
exchange with the environment.
Isotropic : the interconnected bubbles form a convoluted path for any gases or liquids flowing through them. Such a
complex path continually brings the gases into contact with the metal walls. This results in outstanding convective heat
transfers. An additional advantage of this isotropic structure is that heat is distributed evenly in a three-dimensional
manner, so the performance is independent of the direction of the convective flow.
Cooling LED fixtures with Porifera is much more efficient than cooling with conventional cooling elements thus providing increased
life span as well as improved efficiency.
An LED’s life span and its efficiency are directly correlated with its junction temperature. This correlation follows an exponential
line i.e. more efficient cooling has an enormous impact on these factors.
Specifications of Porifera :
-
Open cell structure
Organic structure
Isotropic
Aluminium
Porifera is a passive cooling system that brings all the advantages of an active cooling system without the downsides : greater
efficiency without the need for maintenance and completely noiseless.
Advantages :
-
Longer LED life span
Improved LED efficiency
Lower power consumption
Completely maintenance free
Noiseless
TAL NV - INFO@TAL.BE
JOOS DE TER BEERSTLAAN 33, 8740 PITTEM, BELGIUM
T. 0032 51/46.43.41 – F. 0032 51/46.43.42 – WWW.TAL.BE