UE Spectra 12 Harsh Environment, Hazardous Area Switches

Prices starting at:
$260.00
In stock
SKU
12

Compact harsh environment pressure, differential pressure, and temperature switches. Diaphragm, piston, immersion stem, bulb and capillary sensors with hermetically sealed microswitch, single or dual SPDT switch outputs, NEMA4X, 7, and 9 enclosures for Class I/II, Div 1, Div 2 hazardous environments. UL, cUL, ATEX, and IECEx approvals, CE compliant.

United Electric Spectra 12 series hazardous location switches are ideal for operation in tough applications where space is at a premium. A Belleville spring assembly provides vibration resistance and prolongs switch life. The 316 stainless steel enclosure and hermetically sealed switch provide rugged protection from the environment. The easily accessible adjustment wheel allows in-line field settings. 5-Amp switches are standard, but 1-Amp switch is available for use in intrinsically safe circuits.

  • SPDT or DPDT hermetically sealed switch output (SPDT only on temperature switches)
  • Stainless steel construction and wetted parts, construction varies by model
  • Pressure ranges 8 to 6000 PSI; Differential pressure ranges 0.7" WCD to 150 PSID; Temperature ranges -130° to 650°F
  • Snap-action Belleville spring for vibration resistance and stability
  • Mounting bracket for retrofit applications
  • 1/2" or 1/4" NPTF process connections
  • Approved for use in Class I Div 1 and 2, Class II Div 1 and 2, Class III, and Class I Zone 1 environments

Model Selection Guide

Use this table to find the right model for your application. Don't see the option you need? Call a Lesman sales specialist at 800-953-7626.

In catalog numbers, the bolded character refers to the connection style (as shown in installation guide).

Pressure Switches

Adjustable
Range
(PSI Unless Noted)
Deadband
(PSI Unless Noted)
Proof
Pressure (PSI)
Belleville
Actuation
One SPDT Switch Two SPDT Switches (for DPDT)
Catalog
Number
Catalog
Number
Catalog
Number
Catalog
Number
5 Amp Switch. 316 SS Sensor and Pressure Connection, Buna-N Diaphragm, Type W: 1/2" NPTF Connection.
30" HgVac to 0 PSI
-20" to 20" WC
2" to 50" WC
10" to 200" WC
0.2" to 2" Hg
0.5" to 3.5" WC
0.5" to 5" WC
1" to 10" WC
100
100
100
100
No
No
No
No
12SHSNW1
12SHSNW2
12SHSNW3
12SHSNW4



12SHSDW1
12SHSDW2
12SHSDW3
12SHSDW4



5 Amp Switch. 316 SS Sensor and Pressure Connection, Welded Diaphragm, Type 7/9: 1/2" NPTF Connection, 23/32" Orifice for Clean-Out Purposes.
1 to 15
3 to 15
3 to 50
10 to 35
25 to 85
5 to 100
65 to 125
0.5 to 2
1 to 4
0.5 to 4
1 to 6
3 to 11
1.0 to 8
6 to 18
500
500
500
500
500
500
500
No
Yes
No
Yes
Yes
No
Yes
12SHSN9A
12SHSN7A
12SHSN9B
12SHSN7B
12SHSN7C
12SHSN9C
12SHSN7D






12SHDN9A
12SHDN7A
12SHDN9B
12SHDN7B
12SHDN7C
12SHDN9C
12SHDN7D






5 Amp Switch. 316 SS Sensor, Welded Diaphragm, Type 2: 1/2" NPTF Pressure Connection, 23/32" Orifice. High Proof Pressure Not for high cycling use.
10 to 25
15 to 45
25 to 85
50 to 130
100 to 210
160 to 400
275 to 850
2 to 7
3 to 10
5 to 20
7 to 25
8 to 30
10 to 50
40 to 125
2500
2500
2500
2500
2500
2500
2500
Yes
Yes
Yes
Yes
Yes
Yes
Yes
12SHSN2A
12SHSN2B
12SHSN2C
12SHSN2D
12SHSN2E
12SHSN2F
12SHSN2G






12SHDN2A
12SHDN2B
12SHDN2C
12SHDN2D
12SHDN2E
12SHDN2F
12SHDN2G






5 Amp Switch. 316 SS Sensor, Kapton (Teflon-coated Polyamid) Diaphragm, Buna-N O-ring. Type 3: 1/2"NPTF Pressure Connection, 1/2" Orifice. Type 4: 1/4" NPTF Pressure
Connection, 1/8" Orifice.
8 to 30
15 to 55
30 to 170
100 to 370
200 to 700
400 to 1500
1000 to 3200
2000 to 6000
2 to 6
3 to 8
5 to 15
15 to 50
40 to 90
100 to 250
100 to 500
400 to 800
1000
1000
1000
1000
3000
4500
10000
10000
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
12SHSN3A
12SHSN3B
12SHSN3C
12SHSN3D
12SHSN3E
12SHSN3F
12SHSN3G
12SHSN3H
12SHSN4A
12SHSN4B
12SHSN4C
12SHSN4D
12SHSN4E
12SHSN4F
12SHSN4G
12SHSN4H
12SHDN3A
12SHDN3B
12SHDN3C
12SHDN3D
12SHDN3E
12SHDN3F
12SHDN3G
12SHDN3H
12SHDN4A
12SHDN4B
12SHDN4C
12SHDN4D
12SHDN4E
12SHDN4F
12SHDN4G
12SHDN4H
5 Amp Switch. 316 SS Sensor and Diaphragm, Viton O-ring. Type 5: 1/2" NPTF Pressure Connection, 1/2" Orifice. Type 6: 1/4" NPTF Pressure Connection, 1/8" Orifice.
9 to 35
25 to 65
50 to 150
100 to 350
250 to 700
400 to 1500
1000 to 3200
2000 to 6000
2 to 7
3 to 10
5 to 15
15 to 50
40 to 95
100 to 300
100 to 500
400 to 1000
1000
1000
1000
1000
3000
4500
10000
10000
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
12SHSN5A
12SHSN5B
12SHSN5C
12SHSN5D
12SHSN5E
12SHSN5F
12SHSN5G
12SHSN5H
12SHSN6A
12SHSN6B
12SHSN6C
12SHSN6D
12SHSN6E
12SHSN6F
12SHSN6G
12SHSN6H
12SHDN5A
12SHDN5B
12SHDN5C
12SHDN5D
12SHDN5E
12SHDN5F
12SHDN5G
12SHDN5H
12SHDN6A
12SHDN6B
12SHDN6C
12SHDN6D
12SHDN6E
12SHDN6F
12SHDN6G
12SHDN6H
5 Amp Switch. 316 SS Sensor, Kapton (Teflon-coated Polyamid) Diaphragm, Buna-N O-ring. Type 8: 1/4" NPTF Pressure Connection, 1/8" Orifice.
3 to 25
15 to 75
25 to 150
50 to 450
100 to 900
500 to 2500
700 to 4000
0.5 to 4
1 to 7
1 to 12
3 to 36
10 to 60
20 to 140
40 to 250
1000
1000
1000
3000
3000
7500
7500
No
No
No
No
No
No
No
12SHSN8A
12SHSN8B
12SHSN8C
12SHSN8D
12SHSN8E
12SHSN8F
12SHSN8G






12SHSD8A
12SHSD8B
12SHSD8C
12SHSD8D
12SHSD8E
12SHSD8F
12SHSD8G






5 Amp Switch. 316 SS Piston and Pressure Connection, Buna-N O-ring. Type 8: 1/4" NPTF Pressure Connection.
50 to 500
300 to 1200
300 to 1200
600 to 2600
600 to 2600
1200 to 5500
1200 to 5500
4000 to 12500
4000 to 12500
15 to 65
30 to 200
30 to 200
50 to 350
50 to 350
100 to 800
100 to 800
300 to 1450
300 to 1450
10000
10000
10000
10000
10000
10000
10000
10000
10000
No
No
Yes
No
Yes
No
Yes
No
Yes
12SHSNP0
12SHSNP1
12SHSNP6
12SHSNP2
12SHSNP7
12SHSNP3
12SHSNP8
12SHSNP4
12SHSNP9








12SHSDP0
12SHSDP1
12SHSDP6
12SHSDP2
12SHSDP7
12SHSDP3
12SHSDP8
12SHSDP4
12SHSDP9









Differential Pressure Switches

Adjustable
Setpoint Range
Deadband Proof
Pressure (PSI)
Belleville
Actuation
One SPDT Switch One DPDT Switch
Catalog Number Catalog Number
5 Amp Switch. Buna-N Diaphragm and Sealing Diaphragms, Epoxy-Coated Aluminum Housing Type K: 1/8" NPTF Pressure Connection, SS Mounting Bracket Attached.
0.7" to 10" WCD
3" to 20" WCD
10" to 150" WCD
2 to 20 PSID
5 to 80 PSID
10 to 150 PSID
0.2" to 1" WC
0.3" to 1.5" WC
0.3" to 5" WC
0.3 to 1.5 PSI
1 to 8 PSI
1 to 10 PSI
400
400
400
2500
2500
2500
No
No
No
No
No
No
12SHSNK1
12SHSNK2
12SHSNK3
12SHSNK4
12SHSNK5
12SHSNK6





0.7" to 10" WCD
3" to 20" WCD
10" to 150" WCD
2 to 20 PSID
5 to 80 PSID
10 to 150 PSID
0.2" to 1.5" WC
0.3" to 2" WC
0.3" to 8" WC
0.3 to 2 PSI
1 to 10 PSI
1 to 15 PSI
400
400
400
2500
2500
2500
No
No
No
No
No
No





12SHSDK1
12SHSDK2
12SHSDK3
12SHSDK4
12SHSDK5
12SHSDK6

Temperature Switches

Temperature models are not available with dual SPDT or DPDT switches.  Optional capillary lengths and stainless steel armored covered capillary available. Call Lesman for pricing and delivery.

Adjustable
Setpoint Range
Maximum
Temperature
Stem or Bulb Size Belleville
Actuation
Catalog Number
 °F  °C  °F  °C
Single 5 Amp SPDT Switch. Type L: 316 Stainless Steel Immersion Stem 1/2" NPTM Threaded Connection.
0° to 225°
200° to 425°
-17.8° to 107.2°
93.3° to 218.3°
275°
475°
135°
246.1°
9/16" x 1-25/32" Below Thread
9/16" x 1-25/32" Below Thread
No
No
12SHSNL1
12SHSNL2
Single 5 Amp SPDT Switch. Type R: 304 Stainless Steel Bulb with 6-Foot Capillary. Non-Toxic Oil Fill.
-130° to 120°
0° to 150°
50° to 300°
150° to 650°
-90° to 48.9°
-17.8° to 65.6°
10° to 148.9°
65.6° to 343.3°
170°
200°
350°
700°
76.7°
93.3°
176.7°
371.1°
3/8" O.D. x 4-7/8" Length
3/8" O.D. x 7-1/4" Length
3/8" O.D. x 4-7/8" Length
3/8" O.D. x 4" Length
No
No
No
No
12SHSNR1
12SHSNR2
12SHSNR3
12SHSNR4
More Information
SIL-Rated No
Measured Variable Differential Pressure, Gauge Pressure, Vacuum/Compound Pressure, Temperature
Enclosure/Construction NEMA 4X, NEMA 7, NEMA 9, Div 1 Hazardous, Div 2 Hazardous
Switch Output SPDT, DPDT, Dual SPDT
Sensor Type Diaphragm, Piston
Adjustment Screwdriver Adjustment
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