Name: SE-330 Series - Neutral-Grounding-Resistor Monitor
Brand: Littelfuse Inc.

SE-330 Series - Neutral-Grounding-Resistor Monitor

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The SE-330 is an advanced ground-fault and neutral-grounding resistor monitoring relay that is compliant with Rule 10-302 of the 2018 Canadian Electrical Code Part I (CE Code). It measures neutral current, neutral-to-ground voltage, and neutral-to-ground resistance. It provides continuous monitoring of the neutral-to-ground path to verify that the neutral-grounding resistor (NGR) is intact and that it has not been bypassed or shorted. An open NGR renders current sensing ground-fault protection inoperative and could result in a false belief that the system is functioning properly. A shorted NGR results in higher-than-expected ground-fault current. A unique LED flashing code provides external confirmation for plant safety teams and inspectors when standards-compliant protection has been configured and is active.

The SE-330 can be used with low- and medium-voltage transformers and generators with low- or high-resistance grounding used in processing, manufacturing, chemical, pulp and paper, petroleum, and water-treatment facilities. For applications above 35 kV, use the SE-330HV. For applications that require conformance to Australian/New Zealand standard AS/NZS 2081, use the SE-330AU.

Complete setup of the SE-330 requires connection to a PC running SE-MON330 v4.10 or higher.

For applications where existing switchgear is inaccessible or where a separate control panel is desirable, the SE-330 is also available within a NEMA 4X enclosure. The NGRM-ENC Series is available various options, including a surface-mounted or door-mounted SE-330, to fit the specific customer application.

Access specifications, certifications, check availability and order parts below

Catalog #	Supply Voltage VAC	Supply Voltage VDC	Relay Contacts Config	Analog Output Current mA	Communications	New Rev Avail	Old Rev Avail	IEEE Device Numbers	Relay Contact Operating	Dimensions	Weight (lbs/g)	Auto Manual Reset	Conformally coated	Frequency	GF Trip Level Range pct	Samples

SE-330-00-00	65 - 265	85 - 275	2 Form A; 2 Form C	4 - 20	USB	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-00-01	65 - 265	85 - 275	1 Form A; 1 Form B; 2 Form C	4 - 20	USB	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-01-00	65 - 265	85 - 275	2 Form A; 2 Form C	4 - 20	USB; DeviceNet	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-01-01	65 - 265	85 - 275	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; DeviceNet	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-03-00	65 - 265	85 - 275	2 Form A; 2 Form C	4 - 20	USB; Ethernet (Dual RJ45)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-03-01	65 - 265	85 - 275	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; Ethernet (Dual RJ45)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-04-00	65 - 265	85 - 275	2 Form A; 2 Form C	4 - 20	USB; Ethernet (RJ45 and SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-04-01					USB Ethernet (RJ45 and SC Fiber)					8.4H X 3.9W X 5.8D				50 60 ASD		Order
SE-330-05-00	65 - 265	85 - 275	2 Form A; 2 Form C	4 - 20	USB; Ethernet (Dual SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-05-01	65 - 265	85 - 275	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; Ethernet (Dual SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-06-00	65 - 265	85 - 275	2 Form A; 2 Form C	4 - 20	USB; IEC61850 (Dual RJ45)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-06-01	65 - 265	85 - 275	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; IEC61850 (Dual RJ45)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-07-00	65 - 265	85 - 275	2 Form A; 2 Form C	4 - 20	USB; IEC61850 (RJ45 and SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-07-01	65 - 265	85 - 275	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; IEC61850 (RJ45 and SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-08-00	65 - 265	85 - 275	2 Form A; 2 Form C	4 - 20	USB; IEC61850 (Dual SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-08-01	65 - 265	85 - 275	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; IEC61850 (Dual SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-20-00	28 - 52	36 - 72	2 Form A; 2 Form C	4 - 20	USB	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-20-01	28 - 52	36 - 72	1 Form A; 1 Form B; 2 Form C	4 - 20	USB	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-21-00	28 - 52	36 - 72	2 Form A; 2 Form C	4 - 20	USB; DeviceNet	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-21-01	28 - 52	36 - 72	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; DeviceNet	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-23-00	28 - 52	36 - 72	2 Form A; 2 Form C	4 - 20	USB; Ethernet (Dual RJ45)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 87	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	3 - 100% of CT-Primary Rating
SE-330-23-01	28 - 52	36 - 72	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; Ethernet (Dual RJ45)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating
SE-330-24-00	28 - 52	36 - 72	2 Form A; 2 Form C	4 - 20	USB; Ethernet (RJ45 and SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-24-01	28 - 52	36 - 72	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; Ethernet (RJ45 and SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-25-00	28 - 52	36 - 72	2 Form A; 2 Form C	4 - 20	USB; Ethernet (Dual SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-25-01	28 - 52	36 - 72	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; Ethernet (Dual SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-26-00	28 - 52	36 - 72	2 Form A; 2 Form C	4 - 20	USB; IEC61850 (Dual RJ45)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-26-01	28 - 52	36 - 72	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; IEC61850 (Dual RJ45)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-27-00	28 - 52	36 - 72	2 Form A; 2 Form C	4 - 20	USB; IEC61850 (RJ45 and SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-27-01	28 - 52	36 - 72	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; IEC61850 (RJ45 and SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-28-00	28 - 52	36 - 72	2 Form A; 2 Form C	4 - 20	USB; IEC61850 (Dual SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order
SE-330-28-01	28 - 52	36 - 72	1 Form A; 1 Form B; 2 Form C	4 - 20	USB; IEC61850 (Dual SC Fiber)	Now	No longer available	50G - 50N - 51G - 51N - 59N - 86	Fail-safe / Non Fail-safe	8.4 H x 3.9 W x 5.8 D in.	0 Kg	Latching; Autoreset	Standard	50; 60; ASD	2 - 100% of CT-Primary Rating	Order