Safety Contactors

Safety contactors are a type of safety relay, designed to ensure that if there is a fault either externally or within a device, the circuit will remain safe. They monitor functions in the circuit and react to faults, often by stopping or preventing the movement of parts.

How do safety contactors work?

Safety contactors are devices used for risk reduction in industrial settings. They work by switching the power in an electronic circuit, usually by breaking the circuit with electrical contacts. When a fault is detected, they will isolate the function they are monitoring, preventing it from continuing to work.

Each safety contactor measures a specific function, and there is usually a whole network of interconnected safety contactors working together to minimise risk.

Types of safety contactors

Safety contacts can vary by design in a number of different ways. This includes the number of contacts, their current and voltage rating, and their dimensions, which can vary quite significantly.


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Description Price Number of Contacts Range Pole and Throw Configuration Series Normal State Configuration Number Of Auxiliary Contacts Auxiliary Contacts Contact Current Rating Contact Voltage Rating Coil Voltage Terminal Type Length Width Depth
RS Stock No. 782-3049
Mfr. Part No.PRDA-11AGA-120
SGD118.39
Each
units
- - DPDT PRD - - - 30 A - 120 V ac - - - -
RS Stock No. 782-3009
Mfr. Part No.P40P42D12P1-24
SGD186.71
Each
units
- - 3PST P40 NO - - 40 A - 24 V dc - - - -
RS Stock No. 175-3211
Mfr. Part No.1SBL177082R1322
BrandABB Jokab
SGD111.78
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 30 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz Screw 45mm 110.5mm 80mm
RS Stock No. 175-3203
Mfr. Part No.1SBL137082R1322
BrandABB Jokab
SGD87.73
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 25 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz Screw 45mm 110.5mm 80mm
RS Stock No. 175-3231
Mfr. Part No.1SBL367082R1122
BrandABB Jokab
SGD355.49
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 100 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 55mm 144mm 119.5mm
RS Stock No. 175-3235
Mfr. Part No.1SBL387082R1322
BrandABB Jokab
SGD448.55
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 105 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz Screw 55mm 144mm 119.5mm
RS Stock No. 175-3212
Mfr. Part No.1SBL236082R3022
BrandABB Jokab
SGD181.39
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 45 A 600 V ac 24 V dc Screw 45mm 119.5mm 80mm
RS Stock No. 175-3199
Mfr. Part No.1SBL136082R3022
BrandABB Jokab
SGD126.17
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 25 A 600 V ac 24 V dc Screw 45mm 110.5mm 80mm
RS Stock No. 175-3205
Mfr. Part No.1SBL156082R3022
BrandABB Jokab
SGD133.62
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 28 A 600 V ac 24 V dc Screw 45mm 110.5mm 80mm
RS Stock No. 175-3238
Mfr. Part No.1SBL397082R1322
BrandABB Jokab
SGD564.83
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 125 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz Screw 70mm 149mm 119.5mm
RS Stock No. 187-5340
Mfr. Part No.191734
BrandEaton
SGD138.61
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz Screw 45mm 117mm 68mm
RS Stock No. 175-3232
Mfr. Part No.1SBL367082R1322
BrandABB Jokab
SGD347.86
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 100 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz Screw 55mm 144mm 119.5mm
RS Stock No. 175-3215
Mfr. Part No.1SBL237082R1322
BrandABB Jokab
SGD142.58
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 45 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz Screw 45mm 119.5mm 80mm
RS Stock No. 187-5338
Mfr. Part No.191741
BrandEaton
SGD96.68
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 45mm 117mm 68mm
RS Stock No. 187-5328
Mfr. Part No.191732
BrandEaton
SGD137.41
Each
units
- - - DILAS - 8 4NO/4NC 4 A 415 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz Screw 45mm 117mm 68mm
RS Stock No. 175-3223
Mfr. Part No.1SBL296082R3022
BrandABB Jokab
SGD242.73
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 50 A 600 V ac 24 V dc Screw 45mm 119.5mm 80mm
RS Stock No. 175-3209
Mfr. Part No.1SBL177082R1122
BrandABB Jokab
SGD151.78
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 30 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 45mm 110.5mm 80mm
RS Stock No. 175-3237
Mfr. Part No.1SBL397082R1122
BrandABB Jokab
SGD519.91
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 125 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 70mm 149mm 119.5mm
RS Stock No. 175-3220
Mfr. Part No.1SBL277082R1322
BrandABB Jokab
SGD220.12
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 50 A 600 V ac 100 → 250 V dc, 100 → 250 V @ 50/60 Hz Screw 45mm 119.5mm 80mm
RS Stock No. 175-3218
Mfr. Part No.1SBL276082R3022
BrandABB Jokab
SGD208.35
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 50 A 600 V ac 24 V dc Screw 45mm 119.5mm 80mm