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
R 1,382.90
Each
units
- - DPDT PRD - - - 30 A - 120 V ac - - - -
RS stock no. 766-1918
Mfr. Part No.3TK2851-1AL20
BrandSiemens
R 4,060.00
Each
units
- SIRIUS 2P 3TK28 2NO/NC - - 10 A 600 V ac 230 V ac Screw 132mm 90mm 108mm
RS stock no. 766-1891
Mfr. Part No.3TK2850-1AJ20
BrandSiemens
R 4,060.00
Each
units
- SIRIUS 3P 3TK28 3NO - - 10 A 600 V ac 115 V ac Screw 132mm 90mm 108mm
RS stock no. 175-3205
Mfr. Part No.1SBL156082R3022
BrandABB Jokab
R 1,659.32
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. 776-8479
Mfr. Part No.100S-C30EJ22C
R 3,054.41
Each
units
3 - 3P 100S-C 2NO/2NC 4 2NO/2NC 30 A 690 V ac 24 V dc - 81mm 45mm 143mm
RS stock no. 175-3231
Mfr. Part No.1SBL367082R1122
BrandABB Jokab
R 4,370.59
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. 175-3223
Mfr. Part No.1SBL296082R3022
BrandABB Jokab
R 2,946.80
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. 422-6593
Mfr. Part No.100S-C43KD22C
R 4,124.04
Each
units
3 - 3P 100S-C 5NO/2NC 4 2NO/2NC 43 A 525 V ac 110 V ac Screw 81mm 54mm 139.5mm
RS stock no. 422-6638
Mfr. Part No.100S-C60KD22C
R 5,379.11
Each
units
3 - 3P 100S-C 5NO/2NC 4 2NO/2NC 60 A 525 V ac 110 V ac Screw 122mm 72mm 156mm
RS stock no. 187-5344
Mfr. Part No.191743 & DILMS17-23(230V50HZ,240V60HZ)
BrandEaton
R 1,382.25
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 18 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 56mm 138mm 85mm
RS stock no. 187-5325
Mfr. Part No.191700 & DILAS-44(110V50HZ,120V60HZ)
BrandEaton
R 932.52
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. 175-3208
Mfr. Part No.1SBL176082R3022
BrandABB Jokab
R 1,871.67
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. 183-4596
Mfr. Part No.100S-E116ED12CL
R 8,440.10
Each
units
3 - - 100S-E - 3 2NC/NO 116 A - 100 → 250 V ac/dc Screw 90mm 142.5mm 150mm
RS stock no. 187-5332
Mfr. Part No.191740 & DILMS7-23(230V50HZ,240V60HZ)
BrandEaton
R 944.38
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 7 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 45mm 117mm 68mm
RS stock no. 175-3227
Mfr. Part No.1SBL347082R1122
BrandABB Jokab
R 3,983.75
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. 187-5347
Mfr. Part No.191757 & DILMS17-R23(230V50HZ,240V60HZ)
BrandEaton
R 1,919.30
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 18 A 400 V 230 V ac @ 50 Hz, 240 V ac @ 60 Hz Screw 56mm 138mm 85mm
RS stock no. 175-3225
Mfr. Part No.1SBL297082R1122
BrandABB Jokab
R 2,906.12
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 50 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 45mm 119.5mm 80mm
RS stock no. 175-3206
Mfr. Part No.1SBL157082R1122
BrandABB Jokab
R 1,621.70
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 28 A 600 V ac 20 → 60 V dc, 24 → 60 V @ 50/60 Hz Screw 45mm 110.5mm 80mm
RS stock no. 776-8481
Mfr. Part No.100S-C43EJ22C
R 4,693.94
Each
units
3 - 3P 100S-C 2NO/2NC 4 2NO/2NC 43 A 690 V ac 24 V dc - 81mm 45mm 146mm
RS stock no. 776-8488
Mfr. Part No.100S-C37EJ22C
R 3,477.18
Each
units
3 - 3P 100S-C 2NO/2NC 4 2NO/2NC 37 A 690 V ac 24 V dc - 81mm 45mm 143mm