Eaton/Moeller ESR4
Safety Relay Index

For Monitoring of Emergency-Stop Applications and Safety Doors

Part Name	Channel	Actuating Voltage	Contacts			Number of enabling paths to IEC/EN 60204 Stop Category
Part Name	Channel	Actuating Voltage	Delayed	Non-Delayed	Signal	0	1
ESR4-NO-30-24VAC-DC	Dual	24 V DC 24 V AC 50/60 Hz	-	3	-	3	-
ESR4-NO-30-115VAC		115 V AC, 50/60 Hz	-	3	-	3	-
ESR4-NO-30-230VAC		230 V AC, 50/60 Hz	-	3	-	3	-
ESR4-NO-31	Single	24 V DC, 24 V AC, 50/60 Hz	-	3	1	3	-
ESR4-NO-31-115VAC		115 V AC, 50/60 Hz	-	3	1	3	-
ESR4-NO-31-230VAC		230 V AC, 50/60 Hz	-	3	1	3	-
ESR4-NO-21	Dual	24 V DC, 24 V AC, 50/60 Hz	-	4	1	2	-
ESR4-NV3-30	Dual-channel, Off delayed, 0.15 — 3 s	24 V DC	3	4	-	2	1
ESR4-NV30-30	Dual-channel, Off delayed, 1.5 — 30 s	24 V DC	3	4	-	2	1
ESR4-NT30-30	Dual-channel, delayed, 1.5 — 30 s	24 V DC	3	4	-	2	1
For Contact Monitoring
ESR4-NM-21	Dual	24 V DC	-	4	1	2	-
Two-Hand Relay
ESR4-NZ-21	Dual	24 V DC, 24 V AC 50/60 Hz	-	4	1	2	-
Contact Expansion Modules
ESR4-NE-42	Non-delayed	24 V DC, 24 V AC 50/60 Hz	-	4	2	4	-
ESR4-VE3-42	Off-delayed	24 V DC	-	4	2	-	4

ESR4 Installation Sheets

	Evaluation device for two-hand actuators ESR4-NZ-21 06/03 AWA 2131-1743 [417 KB] [18.12.2001]
	Basic device for Emergency-Stop and Safety Gate Applications ESR3-NO-31(230V) 07/03 AWA 2131-1740 [314 KB] [18.12.2001]
	Basic device for Emergency-Stop and Safety Gate Applications ESR4-NO-21, ESR4-NM-21 08/03 AWA 2131-1741 [353 KB] [18.12.2001]
	Base device for Emergency Stop and Safety Gate Applications ESR4-NO-30 04/04 AWA 2131-2150 [478 KB] [21.07.2004]
	Base device for Emergency Stop and Safety Gate Applications ESR4-NT30-30 04/04 AWA 2131-1884 [403 KB] [18.12.2001]
	Base device for Emergency Stop and Safety Gate Applications ESR4-NV3-30, ESR4-NV30-30 02/04 AWA 2131-1838 [387 KB] [22.01.2002]
	Basic device for Emergency-Stop Applications ESR4-NO-31 05/04 AWA 2131-1742 [420 KB] [18.12.2001]
	Emergency-Stop-Relays ESR4-NE-42, ESR4-VE3-42 07/02 AWA 2131-1744 [288 KB] [18.12.2001]

The device consists of a power section, the electronics and two redundant relays with interlocked opposing contacts for the enabling and signaling paths.

The range includes relays for Emergency-Stop circuits, monitoring of safety mats, bumpers, protective guards and monitoring of two-hand controls, complying with safety category 3 or 4, as per the EC machinery directive standards EN 954-1 and IEC/EN 60 204-1.

Safety relays for Emergency-Stop and monitoring protective guards are available for single or dual channel applications, thus increasing the range of possible application