SLA-440-ASA [ETC]
Diversified Electronics;
ETC 
800.727.5646
atcdiversified.com
Diversified Electronics
SLA Series
The ATC Diversified SLA Series is designed to protect 3-phase equipment
against PHASE LOSS, UNDER VOLTAGE, and PHASE REVERSAL
conditions.
With normal operating voltages applied in the proper ABC sequence, the
internal relay will energize (PICK-UP). When incorrect phase sequence or
phase loss occurs or the three-phase voltages fall below the drop out
voltages, the relay will de-energize (DROP-OUT). On models featuring
indicators, the LED glows when all line conditions are normal.
STYLE “A”
STYLE “N”
Both Delta and Wye systems may be monitored. In Wye systems, connec-
tions to neutral are NOT required.
For UL Listed units, with field wiring terminals, copper wire with
60°/75°C rating must be used for control circuitry connections.
NOTE: When a phase is lost while the motor is running, a condition known as
regeneration occurs where a voltage is induced into the open phase nearly
equal in magnitude to the normal phase-to-phase voltage. However, with the
exception of lightly loaded motors, enough change is detected by the SLA to pro-
vide the required protection when properly adjusted.
STYLE “E”
SPECIFICATIONS
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n
1 Ø Low 83% of Nominal
DROP-OUT
VOLTAGE
• Available up to 480 VAC
• Delta or Wye Systems
PROTECTS 3-PHASE
EQUIPMENT AGAINST:
3 Ø Low 90% of Nominal
Models Up to 300 VAC
Operate 250 mSEC
Release 0.5 SEC
• Phase Loss
• Fixed, Lock Shaft, or
Screwdriver Adjustment
• Under Voltage
• Phase Reversal
RESPONSE TIMES
STYLE “A” & “E”
• Several Enclosure Styles
Models Over 300 VAC
Operate 1.0 SEC
TYPICAL APPLICATIONS:
• Air Handlers
• Automatic Transfer Switching
for Monitoring Emergency
Power Supplies
Release 2.0 SEC
• Computer Power Protection
• Conveyor Drive
Operate 60 mSEC
Release 0.5 SEC
RESPONSE TIMES
STYLE “N”
• Irrigation Pumps
• Lift Station Pumps
• Robotics Equipment
• Elevator Drives
• Water Waste & Sewage
Machinery
Style “A” 3 VA (approx.)
Models up to 300 VAC: 3 VA (max.)
Style “E” Models over 300 VAC: 7 VA (max.)
Models over 500 VAC: 3 VA (max.)
• Oil & Gas Pumps
POWER
REQUIRED
• Sawmill & Woodpump
Machinery
• Commercial/Industrial Air
Conditioning & Refrigeration
Compressors
Style “N” 3 VA (max.)
See Ordering Information
Automatic (Manual Optional)
• Power Substation
OPERATING
VOLTAGE
MODEL NUMBER >>>>>> SLA
Operating Voltage
A
RESET
See Ordering Information
Glows when all conditions are Normal
INDICATOR LED
(On Applicable Models)
Type of Operation
Fixed
Lock Shaft Adjusted
Screwdriver Adjusted
F
L
S
SPDT (style “A” and “N”)
DPDT (style “E”)
OUTPUT RATING
PHASE
SEQUENCE
ABC (Will Not Operate CBA)
Enclosure Style
Octal Plug-In, Dust Cover
A
Operate 32° to +131°F (0° to +55°C)
Storage -49° to 185°F (-45° to +85°C)
TEMPERATURE
RATING
Blade Plug-In, Dust Cover B
Surface Mounted, #8 Screw Terminals
E
Surface Mounted, 1/4" Quick Disconnect Terminals N
Options
U.S. PATENT
NUMBER
3,611,050
Add R Suffix when manual reset is required,
(available only in style “E” enclosure)
Plug-In models are UL listed only when used with
RB-08 relay socket.
R
Style “A” NET: 2.24 oz Shipping: 2.56 oz
Style “E” NET: 4.8 oz Shipping: 5.76 oz
Style “N” NET: 5.3 oz Shipping: 5.6 oz
WEIGHT
U
215
Diversified Electronics
atcdiversified.com
800.727.5646
SLA Series
Style “N”
Style “E”
Style “A”
For UL Listed units, copper wire with 60°/75°C rating
must be used for control circuitry connections.
DIMENSIONS (INCHES)
WIRING
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Style “A”
Style “B”
Style “A”
Figure 1
RB-08 or OT-08
Figure 2
RB-11
Figure 3
70-463-1
2.375"
1.75"
Style B
Style “E”
Style “E”
Figure 4
Figure 5
Style “N”
Style “N”
216
800.727.5646
atcdiversified.com
Diversified Electronics
SLA Series
ORDERING INFORMATION
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STYLE A PLUG-IN
DROP-OUT VOLTAGE
MODEL
NUMBER
OPERATING
AGENCY
APPROVAL
TYPE OF
VOLTAGE ADJUSTMENT 1 Ø LOW
3 Ø LOW
OUTPUT RATINGS
DPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC. Figure 2
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 3
DPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 2
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 3
SLA-120-ALA
Lock Shaft
—
SLA-120-ASA
SLA-120-ASB
SLA-230-ALA
95-130 Adj
79-108
85-117
Screwdriver
Lock Shaft
SLA-230-ASA 190-270 Adj.
158-224
171-243
SLA-230-ASB
Screwdriver
SLA-380-ASA 350-440 Adj.
SLA-440-ASA 430-480 Adj.
290-365
357-398
315-396
387-432
SPDT, 360 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
—
SUA-120-ALA
95-130 Adj.
SUA-120-ALAU*
79-108
85-117
SPDT, 345 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
Lock Shaft
SUA-230-ALA
190-270 Adj.
SUA-230-ALAU*
158-224
171-243
SUA-380-ASA 350-440 Adj.
SUA-440-ASA 430-480 Adj.
290-365
357-398
315-396
387-432
SPDT, 360 VA Inductive; 10 Amps
Resistive @ 240 VAC, Figure 1
Screwdriver
*UL Listed only when used with RB-08 relay socket; 5 Amps Resistive @ 240 VAC. All voltages referenced on this page are phase-to-phase.
Models also available with fixed operating voltages. Consult factory.
STYLE E SURFACE MOUNTED ENCLOSURE
DROP-OUT VOLTAGE
MODEL
NUMBER
OPERATING
VOLTAGE
AGENCY
APPROVAL
1 Ø LOW
3 Ø LOW
RESET
OUTPUT RATINGS
DPDT, 211 VA Inductive; 10 Amps
Resistive @ 120 VAC. Figure 4
DPDT, 211 VA Inductive; 10 Amps
Resistive @ 120 VAC. Figure 4
DPDT, 345 VA Inductive; 5 Amps
Resistive @ 240 VAC. Figure 4
DPDT, 345 VA Inductive; 5 Amps
Resistive @ 240 VAC. Figure 4
DPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 4
SPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 5
DPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 4
SPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 5
DPDT, 360 VA Inductive; 3 Amps
Resistive @ 600 VAC. Figure 4
SLA-120-ALE
SLA-120-ALER
SLA-230-ALE
SLA-230-ALER
SLA-380-ALE
SLA-380-ALER
SLA-440-ALE
SLA-440-ALER
Automatic
95-130 Adj.
190-270 Adj.
350-440 Adj.
430-480 Adj.
79-108
85-117
Manual
Automatic
Manual
158-224
290-365
171-243
315-396
Automatic
Manual
Automatic
Manual
357-398
436-519
387-432
473-563
SLA-575-ALE 525-625 Adj.
Automatic
All voltage referenced are phase-to-phase.—Models also available with fixed operating voltages. Consult factory.
STYLE N EPOXY ENCAPSULATED
DROP-OUT VOLTAGE
MODEL
NUMBER
SLA-120-AFN
OPERATING
VOLTAGE
120
AGENCY
APPROVAL
TYPE OF OPERATION
1 Ø LOW
3 Ø LOW
Fixed
100
108
SLA-208-AFN
SLA-220-AFN
SLA-240-AFN
208
220
240
Fixed
Fixed
Fixed
173
183
199
187
198
216
All voltage referenced are phase-to-phase.
217
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