Page 1
SELECTION GUIDE FOR OMEGA
FM
APPROVED
SOLID-STATE RELAYS FOR
INTRINSIC SAFETY
(Except SBG41705)
OMEGA®SOLID STATE
RELAYS FOR
INTRINSIC SAFETY
The maximum energy
possible at the switch
terminals of the OMEGA
Solid-State Relays is far below
the explosive point of the most
volatile surrounding gas
conditions. The type of
non-voltage-producing
switch or sensor best
fitted for the application
can be utilized, since
the entire switching
circuit is rendered
intrinsically safe by the
OMEGA®Solid-State
Relay. As the switching
circuit is low voltage, there
is no shock hazard to
operating or maintenance
personnel.
®
®
Installation
and Maintenance
OMEGA®Solid-State
Relays units are normally
installed in a safe area
and connected to the
sensor in a hazardous
location; no explosion-proof or
protective housings of any kind are
are needed. Units install singly in
any position, or can be grouped on
a common earth-grounded plate
with mounting tabs to provide
electrical grounding. No. 6-32
threaded electrical terminals are
conveniently placed atop the
unit housings.
Model No. UL FM CSA Class Division ABCDEF
Solid-State
Relay
Latching
Solid-State
Relay
Note: Zener barrier model numbers SBG54803 and SBG54806 are certified by CSA for mounting inside a suitable enclosure in Div. 2 or
non-hazardous locations and must be connected by means of the 2 studs provided to a grounded copper busbar or equivalent.
SBG25872 XXX I,II 1,2 XXXXXX
SBG25873 XXX I,II 1,2 XXXXXX
SBG41705 XX I,II 1,2 XXXXXX
OMEGA®zener barriers must be installed in conformance with the National Electrical
Code and the Instruction, Installation and Service Bulletin supplied with all units.
Periodic checks of ground bonding and cleanliness of units and terminals constitute
the only maintenance required.
Approvals Hazardous Locations
K-111
Shown smaller than
actual size.
Group
K
Page 2
66.6
(2.625)
Mounting
Tab
57.2
(2.25)
3
(76)
41.3
(1.625)
20.7 (0.8125)
79
(3.125)
5.5 Dia.
(0.2165)
SOLID STATE RELAYS
FM
APPROVED
FOR INTRINSIC SAFETY
SBG Series
Starts at
$
235
Except
SBG41705
Advantages of OMEGA
®
Solid State Relays
⻬ Rapid, Arc-Free
Response
for Positive,
Non-Mechanical
Operation
⻬ Solid State
Reliability
Ensures
Consistent
Performance
⻬ Low-Power
Switching where a
Few Milliamps of
Current Control
High-Power Loads
⻬ Encapsulated
Construction—
Impervious to Dust,
Moisture, and
Foreign Material
⻬ Standardized, Modular
Housings for Easier
Installation
⻬ Exceptionally Long,
Solid State Relay:
Less than 100 µA at 14 Vdc
actuates the unit to control AC
loads to 5 A at 120 Vac. Resistive
(up to 400,000 Ω) or short-circuiting
sensors operate the unit. There are
115 Vac and 230 Vac models.
Latching Solid State Relay:
The 115 Vac model has momentary
actuation, “start-stop” or differential
control switching for resistive loads
to 0.3 A. OMEGA
for intrinsic safety allow non-voltage
producing switches mounted in the
hazardous area to safely control
higher-power AC loads in the
Trouble-Free Service Life
To Order (Specify Model Number)
®
solid state relays
SBG22445, $235, shown
smaller than actual size.
Dimensions: mm (in)
non-hazardous area. Typical
applications include flow, level, and
pressure switches, which may be
inputs to an alarm or control system.
MOST POPULAR MODEL HIGHLIGHTED!
Line &
Load
Load Turn-On Turn-Off Operating Output
Model No. Price Description
SBG22445 $235 95 to 135 SPST NO
SBG25872 235
SBG25873 235
SBG41705 305 for intrinsic steady ≤25 kΩ 1 MΩ 2 Vac 32 to 120°F SPST NO
Note 1: For typical wiring diagrams, see next page.
Note 2: All AC voltage and current specifications are RMS values unless otherwise stated.
Note 3: Housing material is polysulfone.
Comes complete with operator’s manual.
Ordering Example: SSBG22445, intrinsic safety SSR, $235.
SSR for -17.8 to 48.9°C
intrinsic
Latching SSR
safety
safety
Voltage
Range (Vac)
100 to 135
200 to 250
105 to 125
Current Sensitivity Sensitivity
Max (Typical) (Typical) Loss Range
5 A ≤400 kΩ 1 MΩ 2 Vac (0 to 120°F) 120 Vac
0.3 A
state
K-112
Voltage Temperature Leakage Switching
Current Max
6 mA @
120 Vac
6 mA @
12 mA @
250 Vac
3 mA @
120 Vac
Operation
SPST NC
SPST NO
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WIRING SOLID STATE RELAYS
L2 (HIGH)
N.O. DRY
HAZARDOUS
LOCATION
NON-HAZARDOUS
LOCATION
LATCHING
SAFE-PAK
VAC
LOAD
COM.
ON
OFF
L1 (LOW)
N.O. DRY
HAZARDOUS
LOCATION
NON-HAZARDOUS
LOCATION
SENSOR
SWITCH
LOAD
FUSE F1
FUSE F1
INPUT
VAC
FOR INTRINSIC SAFETY
Solid State
Solid state relays are typically used with non-powered
sensor switches in the hazardous area.
Solid State Relay
Solid state relays SBG22445, SBG25872, and SBG25873
have a sensor switch for hazardous locations.
Relay
Latching solid state relay SBG41705 handles high and
low sensors located in a hazardous location.
Product must be maintained and installed in strict
accordance with the National Electrical Code and the
applicable OMEGA®operator’s manual. Failure to observe
this warning could result in serious injuries or damages.
Warning
INTRINSICALLY SAFE
RELAYS FOR LEVEL
CONTROL SYSTEMS
For complete
details visit
omega.com/lvc500
Intrinsically safe relay electronics are designed
for use with OMEGA®LVC-E conductivity
level switches and LVC-S, LVC-N, and LVC-F
mounting assemblies. They can also be used
with other non-powered mechanical relays to
provide an intrinsically safe switch in a
hazardous area. Relay electronics must be
mounted in the non-hazardous area.
The sensor switches can be mounted in the
hazardous area and are intrinsically safe only
when connected to an approved intrinsically
safe relay. Consult Flow Engineering for
additional information.
K
LVC551, $275, shown
smaller than actual size.
MOST POPULAR MODEL HIGHLIGHTED!
To Order (Specify Model Number)
Model No. Price Description Function Resistance Approvals Locations
LVC551 $275
LVC552 275
Comes with operator’s manual.
Ordering Example: LVC551, SPDT relay output, $275.
8 A resistive @
up to 120 Vac
8 A resistive @
up to 120 Vac
Field selectable
high/low, latching/ Division 1,
non-latching, pump up/
pump down C, D, E, F, G
K-113
Max Media Hazardous
470,000 Ω FM
100,000 Ω UL
Class I, II,
Groups A, B,
Page 4
One Omega Drive | Stamford, CT 06907 | 1-888-TC-OMEGA (1-888-826-6342) | info@omega.com
EPG05
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