SOR Micro Pressure Switch 12L-K4-N4-B1A
The working principle of the American SOR micro pressure switch 12NN-K4-N4-B1A: The pressure switch operates when the pressure within the system exceeds or falls below the rated safety pressure.
Key words:
pressure
switch
switches
normally
Classification:
Product Display
Thor Switch
MANUALS & GUIDES ：
Hotline:
Detailed introduction
United StatesSOR Micro Pressure Switch 12NN-K4-N4-B1A
Here are the key features of the SOR 12L-K4-N4-B1A micro pressure switch:
Pressure Range: 0.5 to 6.0 psi, with a tight dead band of 0.1 psi for precise control
Rugged Construction: Cast iron housing with high overrange (200 psi) and proof pressure (400 psi) ratings
Snap-Action Switching: SPDT configuration with UL and CSA certified elements for reliable AC/DC switching
High Repeatability: Better than 1% of full scale per ISA/ANSI S51.1 standards
Ingress Protection: Enclosure options up to NEMA 4X and IP66 for harsh environments
Field Adjustable: Self-locking setpoint adjustment—no special tools required
SIL Certification: Certified to IEC 61508 for use in SIL1 and SIL2 safety systems
Media Compatibility: Suitable for air, oil, water, and other non-corrosive media
| Parameter | Specification |
|---|---|
| Model | 12L-K4-N4-B1A |
| Pressure Range | 0.5 to 6.0 psi |
| Dead Band | 0.1 psi |
| Overrange Pressure | 200 psi |
| Proof Pressure | 400 psi |
| Switching Element | SPDT, snap-action |
| Repeatability | ±1% of full scale |
| Housing Material | Cast iron |
| Enclosure Rating | NEMA 4X / IP66 |
| Electrical Ratings | UL/CSA certified for AC/DC service |
| Safety Certification | IEC 61508 (SIL1 & SIL2 capable) |
| Adjustment | Field adjustable, self-locking |
| Media Compatibility | Air, oil, water (non-corrosive) |
| Weight | Approx. 6 lbs |
| Status | Discontinued (available via surplus) |
Frequently Asked Questions – SOR 12L-K4-N4-B1A
Q1: What is the pressure range of this model?
A1: It operates from 0.5 to 6.0 psi, with a tight dead band of 0.1 psi for precise switching.
Q2: Is it certified for safety systems?
A2: Yes, it’s IEC 61508 certified for use in SIL1 and SIL2 Safety Instrumented Systems.
Q3: What type of switching element does it use?
A3: It features a snap-action SPDT switch, UL and CSA certified for AC/DC service.
Q4: Can the setpoint be adjusted in the field?
A4: Absolutely. It has a self-locking field adjustment mechanism—no special tools required.
Q5: What environments is it suitable for?
A5: With NEMA 4X / IP66 enclosure ratings, it’s built for harsh, outdoor, or industrial conditions.
Q6: What is the repeatability of the switch?
A6: Repeatability is better than ±1% of full scale, per ISA/ANSI S51.1 standards.
Q7: Is it still in production?
A7: No, this model is discontinued, but it’s available through surplus and repair vendors.
Q8: What media is it compatible with?
A8: Designed for non-corrosive media like air, oil, and water.
| Model Setting | Value Range (kg/cm²) | Return Difference (kg/cm²) | Explosion-Proof Product Model |
|---|---|---|---|
| 12NN-N66-N4-B1A | 0.04 ~ 0.18 | 0.03 | 12L-N66-N4-B1A |
| 12NN-K614-N4-B1A | 0.18 ~ 3.16 | 0.06 | 12L-K614-N4-B1A |
| 12NN-K2-N4-B1A | 0.03 ~ 0.14 | 0.01 | 12L-K2-N4-B1A |
| 12NN-K4-N4-B1A | 0.04 ~ 0.42 | 0.01 | 12L-K4-N4-B1A |
| 12NN-K5-N4-B1A | 0.05 ~ 0.84 | 0.01 | 12L-K5-N4-B1A |
| 12NN-K45-N4-B1A | 0.07 ~ 1.12 | 0.01 | 12L-K45-N4-B1A |
Maximum Allowable Pressure: 14.06 kg/cm²
Factory Test Pressure: 28.12 kg/cm²
Previous Page
Next Page
Previous Page
Next Page
Immediate Consultation
If you are interested in our products, please leave your email, we will contact you as soon as possible, thank you!