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. 175-3211
Mfr. Part No.1SBL177082R1322
BrandABB Jokab
MYR372.07
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 30 A 600 V ac 100 → 250 V @ 50/60 Hz, 100 → 250 V dc Screw 45mm 110.5mm 80mm
RS Stock No. 187-5344
Mfr. Part No.191743 | DILMS17-23(230V50HZ,240V60HZ)
BrandEaton
MYR388.45
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. 187-5359
Mfr. Part No.191759 | DILMS32-R23(230V50HZ,240V60HZ)
BrandEaton
MYR960.36
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
RS Stock No. 187-5355
Mfr. Part No.191706 | DILMS32-23(110V50HZ,120V60HZ)
BrandEaton
MYR701.47
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. 782-3049
Mfr. Part No.PRDA-11AGA-120
MYR321.18
Each
units
- - DPDT PRD - - - 30 A - 120 V ac - - - -
RS Stock No. 175-3235
Mfr. Part No.1SBL387082R1322
BrandABB Jokab
MYR1,455.90
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 105 A 600 V ac 100 → 250 V @ 50/60 Hz, 100 → 250 V dc Screw 55mm 144mm 119.5mm
RS Stock No. 175-3229
Mfr. Part No.1SBL347082R1322
BrandABB Jokab
MYR903.43
Each
units
3 - 3P AFS 3NO 4 2NO/2NC 70 A 600 V ac 100 → 250 V @ 50/60 Hz, 100 → 250 V dc Screw 55mm 144mm 119.5mm
RS Stock No. 175-3239
Mfr. Part No.1SBL407082R1122
BrandABB Jokab
MYR1,851.41
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. 187-5346
Mfr. Part No.191736 | DILMS17-R23(110V50HZ,120V60HZ)
BrandEaton
MYR552.37
Each
units
3 - 3P DILMS 3NO 5 2NO/3NC 18 A 400 V 110 V ac @ 50 Hz, 120 V ac @ 60 Hz Screw 56mm 138mm 85mm