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
SGD111.51
Each
units
- - DPDT PRD - - - 30 A - 120 V ac - - - -
RS Stock No. 782-3009
Mfr. Part No.P40P42D12P1-24
SGD171.86
Each
units
- - 3PST P40 NO - - 40 A - 24 V dc - - - -
RS Stock No. 175-3199
Mfr. Part No.1SBL136082R3022
BrandABB Jokab
SGD137.05
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. 175-3239
Mfr. Part No.1SBL407082R1122
BrandABB Jokab
SGD604.29
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 130 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 70mm 149mm 119.5mm
RS Stock No. 175-3201
Mfr. Part No.1SBL137082R1122
BrandABB Jokab
SGD137.05
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 25 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 45mm 110.5mm 80mm
RS Stock No. 187-5326
Mfr. Part No.191739
BrandEaton
SGD88.46
Each
units
- - - DILAS - 8 4NO/4NC 4 A 415 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 45mm 117mm 68mm
RS Stock No. 175-3223
Mfr. Part No.1SBL296082R3022
BrandABB Jokab
SGD263.74
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. 175-3208
Mfr. Part No.1SBL176082R3022
BrandABB Jokab
SGD164.88
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 30 A 600 V ac 24 V dc Screw 45mm 110.5mm 80mm
RS Stock No. 175-3227
Mfr. Part No.1SBL347082R1122
BrandABB Jokab
SGD353.02
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 70 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 55mm 144mm 119.5mm
RS Stock No. 187-5327
Mfr. Part No.191760
BrandEaton
SGD99.94
Each
units
- - - DILAS - 8 4NO/4NC 4 A 415 V 24 V dc Screw 45mm 117mm 68mm
RS Stock No. 175-3205
Mfr. Part No.1SBL156082R3022
BrandABB Jokab
SGD145.14
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. 175-3235
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. 187-5342
Mfr. Part No.191722
BrandEaton
SGD150.81
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 9 A 400 V 24 V dc Screw 45mm 117mm 68mm
RS Stock No. 175-3211
Mfr. Part No.1SBL177082R1322
BrandABB Jokab
SGD121.48
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. 175-3213
Mfr. Part No.1SBL237082R1122
BrandABB Jokab
SGD197.07
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 45 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 45mm 119.5mm 80mm
RS Stock No. 187-5358
Mfr. Part No.191738
BrandEaton
SGD322.00
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 32 A 400 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz Screw 56mm 138mm 85mm
RS Stock No. 175-3215
Mfr. Part No.1SBL237082R1322
BrandABB Jokab
SGD154.93
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. 187-5341
Mfr. Part No.191755
BrandEaton
SGD138.61
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. 187-5353
Mfr. Part No.191758
BrandEaton
SGD234.00
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 25 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 56mm 138mm 85mm
RS Stock No. 187-5356
Mfr. Part No.191745
BrandEaton
SGD235.20
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 32 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 56mm 138mm 85mm
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