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Special Conditions For Safe Use - Honeywell BX Series Installation Instructions Manual

Explosion-proof limit switches
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MICRO SWITCH™ BX Series

SPECIAL CONDITIONS FOR SAFE USE

Honeywell explosion-proof switches are designed specifically
for use in hazardous location applications. The BX enclosure is
sealed for protection against corrosion, water, dust and oil as
defined in NEMA 1, 3, 4, 4X, 6, 13, and IP67 (per IEC60529).
The temperature rating for these products depends upon the
seal material used. Products using a fluorosilicone seal have
a rating of -40 °C [-40 °F] to 70 °C [158 °F]. Products using a
fluorocarbon seal have a rating of -12 °C [10 °F] to 70 °C [158
°F]. MICRO SWITCH BX switches are rated according to the
electrical ratings detailed in Table 1.
Table 1. Electrical Ratings: 10 A cont.
ac voltage
Single Pole
Break
Make
120
60
240
30
480
15
1.5
600
12
1.2
A300/120V
A300/240V
dc voltage
Make & Break Inductive
120
0.25
240
0.15
Q300/125V
0.55
Q300/250V
0.27
These products meet the following Protection Classes along
with complying with Essential Health and Safety Standards as
mentioned in Table 2.
Table 2. Certifications
Certifica-
IECEx
ATEX
tion
Certificate
IECEx SIR
SIRA
number
07.0102X
00ATEX1037X
II 2 GD
II 2 GD
Ex d IIC T6 Gb
Ex d IIC T6 Gb
Ex tb IIIC T85°C
Ex tb IIIC T85°C
Protection
Db
Db
Class
-12°C < Tamb < +70°C (Fluorocarbon Seal)
-40°C < Tamb < +70°C (Fluorosilicone Seal)
Double Pole
Break
Make
6
30
3
3
15
1.5
7.5
.75
6
6
60
6
30
3
Resistive
0.80
0.40
INMETRO
EAC
НАНИО
«ЦСВЭ» РОСС
TÜV 14.0556 X
RU.0001.11ГБ05
Ex d IIC T6 Gb
1Ex d IIC T6 Gb
Ex tb IIIC T85°C
Ex tb IIIC T85°C
Db
Db
IP6X
Certifica-
IECEx
tion
IEC 60079-
0:2011
IEC 60079-
1:2007
Health
and Safety
Standards
IEC 60079-
31:2013
The maximum construction gap (ic) is less than that required
Power
by Table 2 of EN/IEC60079-1:2007, clause 5.2.2 as detailed
factor
below in Table 3.
.35
The equipment has a non-conducting coating and may gener-
.35
ate an ignition-capable level of electrostatic charges under cer-
.35
.35
tain extreme conditions. The user should ensure that the equip-
ment is not installed in a location where it may be subjected to
.30
external conditions (such as high pressure steam) that might
.30
cause a build up of electrostatic charges on non-conducting
surfaces. Additionally, cleaning of the equipment should be
done with a damp cloth.
Table 3. Flame path measurements
Flame path
Push rod & bearing 0,076 mm
Bearing & housing
BX with conduit types 1/2-14NPT, 3/4-14NPT also meet the
North American Hazardous Locations Designation: NEMA 7 -
Class I, Groups B, C and D; NEMA 9 - Class II, Groups E, F and
G and comply with UL Standard: UL 894, CSA Standard: C22.2
No. 25-1966, C22.2 No. 30-M1986.
The BX is ideal for outdoor use or in adverse environments
where a combination of explosion-proof plus sealing require-
ments are needed. To comply with explosion proof require-
ments the BX has flame paths within the housing, which cool
exploding gases below the ignition temperature before they
reach explosive gases surrounding the housing. Flame paths
on the BX are (1) an extended plunger between the switch cav-
ity and head and (2) the cover-housing threads on the front of
the switch.
MOUNT, ADJUST, WIRE
MOUNTING
Note mounting dimension drawings for hole locations (Fig.
12, page 34). The BX is directly interchangeable with the LSX
explosion-proof limit switches: Adapter plate is not required.
PK 80148
ISSUE 17
ATEX
INMETRO
ABNT NBR
EN 60079-
IEC 60079-
0:2012
0:2008
ABNT NBR
EN 60079-
IEC 60079-
1:2007
1:2009
ABNT NBR
IEC 60079-
31:2011
EN 60079-
31:2013
ABNT NBR
IEC
60529:2009
Max. gap
Comment
Cylindrical spigot joint
0,02 mm
Cylindrical spigot joint
Sensing and Internet of Things
EAC
ГОСТ Р
МЭК 60079-0-
2011
ГОСТ
IEC 60079-1-
2011
ГОСТ Р
МЭК 60079-31
2010
7

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